fix some testsuite false positives

libbb: make xrealloc_vector zero out the realloc'ed tail

function                                             old     new   delta
xrealloc_vector_helper                                51      76     +25
man_main                                             712     705      -7
act                                                  250     234     -16
create_list                                           91      70     -21
getopt_main                                          695     664     -31
load_dep_bb                                          281     248     -33
fileAction                                           744     709     -35
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/6 up/down: 25/-143)          Total: -118 bytes

hush: fix mishandling of a'b'c=fff as assignments. They are not.

function                                             old     new   delta
parse_stream                                        1920    2004     +84
done_word                                            715     752     +37
parse_and_run_stream                                 328     333      +5
builtin_exec                                          25      29      +4
pseudo_exec_argv                                     138     139      +1
run_list                                            2006    1999      -7
is_assignment                                        215     134     -81
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/2 up/down: 131/-88)            Total: 43 bytes

hush: remove a comment about already fixed bug

makedevs: shrink by Vladimir

function                                             old     new   delta
makedevs_main                                       1071    1049     -22
packed_usage                                       24744   24708     -36

ssd: fix -K/-S mixup in help text

xargs: update help text

xargs: fix xargs -e; added test for that

halt: signal init regardless of ENABLE_INIT

nameif: shrink (by Vladimir)

function                                             old     new   delta
nameif_main                                          668     636     -32

makedevs: fix help text discrepancies

makedevs: shrink (by Vladimir); testsuite

function                                             old     new   delta
makedevs_main                                       1153    1071     -82

hush: support $_NUMBERS variable names

hush: fix "case ... in <newline> word)..."

hush: support "pattern1|pattern2...)" in case statements

parse_stream                                        1847    1861     +14
run_list                                            1995    2006     +11

tr: fix yet another access past the end of a string (bug 4374)

chpst: large code shrink by Vladimir

function                                             old     new   delta
chpst_main                                          1058    1357    +299
euidgid                                               56       -     -56
suidgid                                               59       -     -59
slimit                                               208       -    -208
packed_usage                                       24638   24420    -218
edir                                                 375       -    -375
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 1/1 up/down: 299/-916)         Total: -617 bytes

ash: bash compat: "shift $BIGNUM" is equivalent to "shift 1"

hush: trivial code shrink

function                                             old     new   delta
builtin_continue                                      48      22     -26

hush: use G.xxx instead of #define xxx G.xxx. We have too many globals
 there and #defines get messy. Remove one write-only G.variable.

randomconfig fix

hush: small fix for repeated continue and fix for wrong loop depth count
 after Ctrl-C; with testcase for first one

hush: fix inverted check (was making all break's to act as "break 99999")

hush: fix break'ing out of {} and () groups; with testcase

function                                             old     new   delta
builtin_break                                         93     129     +36
builtin_continue                                      21      47     +26
run_list                                            1973    1976      +3

randomconfig fixes

hush: add #defines to switch off break/continue if loops are not supported
*: remove a few inline keywords
no code changes

modprobe: support for /etc/modprobe.d, by Timo Teras.

function                                             old     new   delta
include_conf_file_act                                  -     929    +929
include_conf_recursive                                 -      30     +30
include_conf_file2                                     -      30     +30
include_conf_file                                      -      14     +14
include_conf_dir_act                                   -      14     +14
build_dep                                           1011     875    -136
include_conf                                         922       -    -922
------------------------------------------------------------------------------
(add/remove: 5/1 grow/shrink: 0/1 up/down: 1017/-1058)        Total: -41 bytes

libbb: dump: do not use uninitialized memory. close bug 4364.

tr: fix "tr [=" case. Closes bug 4374.

function                                             old     new   delta
expand                                              1701    1738     +37
tr_main                                              472     474      +2

hush: fix "while false; ..." exitcode; add testsuites

hush: support "break N" and "continue N"
 fix non-detection of builtins and applets in "v=break; ...; $v; ..." case
 add testsuite entries for the above

function                                             old     new   delta
builtin_break                                         12      93     +81
run_list                                            1948    1971     +23
builtin_continue                                      12      21      +9
pseudo_exec_argv                                     132     138      +6
builtin_exec                                          23      25      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 121/0)             Total: 121 bytes

hush: implement break and continue

function                                             old     new   delta
bltins                                               252     276     +24
builtin_continue                                       -      12     +12
builtin_break                                          -      12     +12
static.version_str                                    18      17      -1
run_list                                            1984    1948     -36
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 1/2 up/down: 48/-27)             Total: 11 bytes

hush: in run_list(), some loop_top ops seems to be superfluous.
 comment them out. Also, use separate temp variable
 for verification loop, helps gcc to optimize better.

function                                             old     new   delta
run_list                                            2039    1984     -55

hush: in run_list(), last_cond_code seems to be superfluous. comment it out

function                                             old     new   delta
run_list                                            2055    2039     -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-16)             Total: -16 bytes

hush: explain run_list() in detail; small optimizations

function                                             old     new   delta
hush_main                                            785     786      +1
expand_variables                                    1447    1448      +1
builtin_exit                                          48      49      +1
builtin_eval                                          54      55      +1
run_list                                            2075    2055     -20
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/1 up/down: 4/-20)             Total: -16 bytes

documentation fix

hush: finish and enable optional case...esac support. Code size cost:

function                                             old     new   delta
run_list                                            1891    2075    +184
parse_stream                                        1764    1847     +83
expand_strvec_to_string                                -      83     +83
done_word                                            647     715     +68
static.reserved_list                                 144     168     +24
static.reserved_match                                  -      12     +12
done_pipe                                             95     105     +10
builtin_exit                                          48      46      -2
builtin_eval                                         127      54     -73
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 5/2 up/down: 464/-75)           Total: 389 bytes

fbset: shrink code a bit more

fbset: code shrink

function                                             old     new   delta
ss                                                     -      33     +33
fbset_main                                          1968    1844    -124
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 33/-124)           Total: -91 bytes

netstat: code shrink

function                                             old     new   delta
print_inet_line                                        -     193    +193
scan_inet_proc_line                                    -     130    +130
unix_do_one                                          519     503     -16
do_info                                              145      97     -48
netstat_main                                         601     548     -53
tcp_do_one                                           462      61    -401
raw_do_one                                           513     107    -406
udp_do_one                                           533     119    -414
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/6 up/down: 323/-1338)       Total: -1015 bytes

style fix, no code changes

netstat: optional -p support by L. Gabriel Somlo <somlo AT cmu.edu>

Without FEATURE_NETSTAT_PRG:
function                                             old     new   delta
recursive_action                                     416     425      +9
tcp_do_one                                           420     428      +8
udp_do_one                                           492     499      +7
raw_do_one                                           472     479      +7
expand                                              1697    1701      +4
netstat_main                                         489     492      +3
unix_do_one                                          486     488      +2
flags                                                  1       -      -1
qgravechar                                           109     106      -3
net_conn_line                                          4       -      -4
bbunpack                                             391     383      -8
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 7/2 up/down: 40/-16)             Total: 24 bytes

With FEATURE_NETSTAT_PRG:
file_act                                               -     213    +213
dir_act                                                -     192    +192
netstat_main                                         489     601    +112
prg_cache_get                                          -      50     +50
tcp_do_one                                           420     462     +42
udp_do_one                                           492     533     +41
raw_do_one                                           472     513     +41
unix_do_one                                          486     519     +33
recursive_action                                     416     425      +9
expand                                              1697    1701      +4
flags                                                  1       -      -1
qgravechar                                           109     106      -3
net_conn_line                                          4       -      -4
bbunpack                                             391     383      -8
packed_usage                                       24586   24572     -14
------------------------------------------------------------------------------
(add/remove: 3/2 grow/shrink: 7/3 up/down: 737/-30)           Total: 707 bytes

whitespace fix

man: a forgotten chunk of lask commit (config file parser fixes)

fix several problems with config parser:
 a bug where it underflows the string
 a bug where it never frees parser_t struct
make read_config() return 0 if parser is NULL,
 make config_close() accept and ignore NULL parser -
 eliminates many if() blocks
reverse the sense of parser bit flags - negative flags
 are harder to grok.
hexdump: revert the change to use config parser, it is BIGGER
 and also requires additional quirks in parser
*: explicitly use PARSER_NORMAL instead of 0

function                                             old     new   delta
login_main                                          1575    1596     +21
config_close                                          18      29     +11
bbunpack                                             383     391      +8
qgravechar                                           106     109      +3
rtnl_tab_initialize                                  121     117      -4
expand                                              1697    1693      -4
man_main                                             717     712      -5
nameif_main                                          674     668      -6
hexdump_main                                         597     591      -6
read_config                                          217     209      -8
dnsd_main                                           1478    1470      -8
sysctl_main                                          203     189     -14
config_open2                                          44      25     -19
make_device                                         1177    1141     -36
config_read                                          597     549     -48
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/11 up/down: 43/-158)         Total: -115 bytes

man: ignore (not complain) lines with less than 2 tokens
 in config file

tr: fix "access past the end of a string" bug 4354

mdev: do not complain if mdev.conf does not exist;
 use #if to prevent gcc from generating dead code
 (sadly, it's more ugly this way)

unzip: move check for unsupported zip features to better place

unzip: give better error message when presented with unsupported
 zip file. Add zip documentation and an example of file we cant
 (yet) unpack.

ash: add slightly different testcase

fix example of vcsa creation

ash: fix testcase to not sleep for whole 10 seconds,
 gets annoying pretty fast. Also fix wrong message there.

ash: fix typo

ash: hopefully close bug 4324. With testcase.

function                                             old     new   delta
evaltree                                             621     869    +248
popstring                                            134     140      +6

ash: testsuite entries for last change

ash: dont allow e.g. exec <&10 to attach to stript's fd!

function                                             old     new   delta
is_hidden_fd                                           -      61     +61
redirect                                            1135    1164     +29
popstring                                            134     140      +6
printf_main                                          635     637      +2
evalvar                                             1374    1376      +2
echo_main                                            294     296      +2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/0 up/down: 102/0)             Total: 102 bytes

*: conversion to config parser

function                                             old     new   delta
config_read                                          540     597     +57
config_open2                                          41      44      +3
rtnl_rtprot_initialize                                70      66      -4
rtnl_rttable_initialize                               78      73      -5
rtnl_rtscope_initialize                               88      83      -5
rtnl_rtrealm_initialize                               48      43      -5
rtnl_rtdsfield_initialize                             48      43      -5
process_module                                       566     560      -6
bbunpack                                             391     383      -8
rtnl_tab_initialize                                  279     121    -158
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/8 up/down: 60/-196)          Total: -136 bytes

ash: prevent exec NN>&- from closing fd used for script reading

ash: fix a bug where redirection fds were not closed afterwards.
 optimize close+fcntl(DUPFD) into dup2. add testsuites.

function                                             old     new   delta
copyfd                                                47      68     +21
argstr                                              1311    1298     -13
popredir                                             148     131     -17
redirect                                            1139    1107     -32
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 21/-62)            Total: -41 bytes

ash: teach ash about 123>file. It could take only 0..9 before

function                                             old     new   delta
redirect                                            1052    1139     +87
need_to_remember                                       -      36     +36
popredir                                             132     148     +16
fixredir                                              86     101     +15
readtoken1                                          3130    3143     +13
evalvar                                             1374    1376      +2
popstring                                            140     134      -6
cmdtxt                                               592     561     -31
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/2 up/down: 169/-37)           Total: 132 bytes

ash: ducument where "no fds > 9 in redirects" limitation is.
 no code changes.

ash: ditch dupredirect(), it was only making code harder to read.
 incorporate it in its single callsite.

function                                             old     new   delta
redirect                                            1054    1052      -2
changepath                                           196     194      -2

ash: explain redirect code a bit

function                                             old     new   delta
redirect                                            1059    1054      -5

ash: code shrink

function                                             old     new   delta
copynode                                             171     180      +9
evaltreenr                                           615     621      +6
evaltree                                             615     621      +6
calcsize                                             121     127      +6
evalpipe                                             349     350      +1
redirect                                            1059    1057      -2
parseheredoc                                         129     126      -3
makename                                              35      32      -3
expredir                                             130     127      -3
parsefname                                           224     219      -5
popstring                                            140     134      -6
pipeline                                             276     268      -8
list                                                 360     351      -9
readtoken1                                          3157    3130     -27
parse_command                                       1504    1460     -44
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/10 up/down: 28/-110)          Total: -82 bytes

s/othervise/otherwise/g

lpd: extend help text

function                                             old     new   delta
packed_usage                                       24466   24612    +146

inetd: do not trash errno in signal handlers;
 in CHLD handler, stop looping through services when pid is found

function                                             old     new   delta
reread_config_file                                  1072    1092     +20
retry_network_setup                                   55      69     +14
reap_child                                           132     130      -2

another overlapping_strcpy

fix all cases of strcpy on overlapping strings.

fix trivial build warning

lpd,lpr: send/receive ACKs after filenames, not only after file bodies.

lpqr_main                                           1114    1149     +35
lpd_main                                             748     768     +20

- strip implied proto and superfluous "" domain part.
  If my lynx groks it, your browser will too ;)

- wrap overlong lines (Cristian Ionescu-Idbohrn)
- s/\.  /. /g;# (me)

chown: do not use static data

function                                             old     new   delta
chown_main                                           160     182     +22
fileAction                                           750     744      -6
ugid                                                   8       -      -8

cut: stop using static data. This alone removed ~70 bytes of code.
 + some optimizations

function                                             old     new   delta
nlists                                                 4       -      -4
cut_lists                                              4       -      -4
cut_main                                            1041     960     -81

cal: remove lone static data variable. -4 bytes. coreutils
 is down to four applets with nonzero data+bss.

- unused variables if !ENABLE_FEATURE_MDEV_RENAME_REGEXP

libbb: [x]fopen_for_{read,write} introduced and used.
 (by Valdimir)

function                                             old     new   delta
config_open2                                           -      41     +41
config_read                                          507     542     +35
find_pair                                            169     187     +18
fopen_for_write                                        -      14     +14
fopen_for_read                                         -      14     +14
find_main                                            406     418     +12
xfopen_for_write                                       -      10     +10
xfopen_for_read                                        -      10     +10
popstring                                            134     140      +6
parse_inittab                                        396     401      +5
next_token                                           923     928      +5
pack_gzip                                           1659    1661      +2
bb__parsespent                                       117     119      +2
fallbackSort                                        1719    1717      -2
evalvar                                             1376    1374      -2
qrealloc                                              36      33      -3
...
...
...
...
singlemount                                         4579    4569     -10
process_stdin                                        443     433     -10
patch_main                                          1111    1101     -10
ifupdown_main                                       2175    2165     -10
file_action_grep                                      90      80     -10
uuidcache_init                                       649     637     -12
hush_main                                            797     785     -12
read_config                                          230     217     -13
dpkg_main                                           3835    3820     -15
read_line_input                                     3134    3110     -24
sysctl_main                                          232     203     -29
config_open                                           40      10     -30
WARN_BAD_LINE                                         44       -     -44
login_main                                          1714    1575    -139
------------------------------------------------------------------------------
(add/remove: 5/1 grow/shrink: 8/74 up/down: 174/-737)        Total: -563 bytes

whitespace fixes, no code changed

- commentary typo fix

- first pass to unify/cleanup uid handling (-236b)
  This needs further love, alot of love.. Tito?

- fix spelling

- s/super.block/superblock/g; # for consistency; -1b

- remove superfluous forward declaration

- document -f

- commentary typo fix

- no obj-code changes. Fix indentation, use existing defines.

telnet: shrink
telnetd: shrink, and fix issue file printing
test: better and shorter usage text

function                                             old     new   delta
putiac2                                               51      50      -1
putiac                                                24      20      -4
handlenetoutput                                       95      91      -4
telnet_main                                         1480    1475      -5
iacflush                                              37      32      -5
make_new_session                                     436     421     -15
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/6 up/down: 0/-34)             Total: -34 bytes

help text: test --help doesnt print it (by design),
 so do not account for it

httpd: add Hopedir directive specially for
 (and by) walter harms <wharms AT bfs.de>;
 fix silly double-parse bug added in 21412.

function                                             old     new   delta
parse_conf                                          1532    1576     +44

msh: fix "while...continue" bug 3884.

build system: clean more files on make clean/make mrproper

udhcp: use libbb for config file parsing (by Vladimir)

function                                             old     new   delta
read_config                                          313     230     -83

libbb/parse_config.c: fix small buglet (by Vladimir)

dnsd,sestatus: use libbb to parse config file (by Vladimir)

function                                             old     new   delta
dnsd_main                                           1544    1487     -57

man: fix breakage: must not die on lines with < 2 tokens

mn: use libbb for config parsing (by Vladimir)

function                                             old     new   delta
man_main                                             757     713     -44

tar: fix handling of tarballs with symlinks with size field != 0

libbb: fix print_flags() [fix somehow is only in 1.11.1?)