bzip2: more of code shrink

compressStream                                       503     473     -30
BZ2_bzCompress                                        78       -     -78
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-108)           Total: -108 bytes
   text    data     bss     dec     hex filename
 676300    2538   12104  690942   a8afe busybox_old
 676192    2538   12104  690834   a8a92 busybox_unstripped

another fix for build failure found by randomconfig

even more fixes from randomconfig runs

fixes revealed by randomconfig run

telnetd: fix comment

telnetd: code shrink suggested by Ralf Friedl <Ralf.Friedl@online.de>

bzip2: move state pointer to the offset 0 (smaller code)
ifdef out DecompressEnd if FEATURE_CLEAN_UP is not seleted

fallbackSort                                        1655    1672     +17
mainSort                                            2447    2458     +11
bzip2_main                                           109     119     +10
.rodata                                           123466  123469      +3
generateMTFValues                                    433     435      +2
handle_compress                                      355     356      +1
BZ2_bzCompress                                        79      78      -1
prepare_new_block                                     55      48      -7
compressStream                                       547     503     -44
sendMTFValues                                       2225    2140     -85
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 6/4 up/down: 44/-137)           Total: -93 bytes
   text    data     bss     dec     hex filename
 676421    2538   12104  691063   a8b77 busybox_old
 676328    2538   12104  690970   a8b1a busybox_unstripped

bzip2: make -s equivalent to -2 (compatible with standard bzip2)
telnetd: typo fix in comment

telnetd: at Alexander Kriegisch <Alexander@kriegisch.name> insistence
add an option to close sessions as soon as child exits.
Maybe it should be a CONFIG option. OTOH, maybe it should be always on,
as it mimics, say, getty's behaviour.

function                                             old     new   delta
handle_sigchld                                         -      49     +49
telnetd_main                                        1312    1355     +43
.rodata                                           123429  123466     +37
packed_usage                                       22770   22806     +36
make_new_session                                     525     532      +7
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/0 up/down: 172/0)             Total: 172 bytes
   text    data     bss     dec     hex filename
 676285    2538   12104  690927   a8aef busybox_old
 676421    2538   12104  691063   a8b77 busybox_unstripped

telnetd: document bug in remove_iacs. reinstate band-aid
which was making it near-impossible to trigger.
remove memmove call which was happening at each network read,
and in 99%+ cases was not needed. Unfortunately, +50 bytes.

telnetd: some simplifications and better error hadling.
telnetd: don't SIGKILL child when closing the session.
kernel will seng SIGHUP for us.

static.iacs_to_send                                    -      15     +15
.rodata                                           123418  123429     +11
make_new_session                                     549     525     -24
send_iac                                              26       -     -26
free_session                                         144     118     -26
telnetd_main                                        1303    1261     -42
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/3 up/down: 26/-118)           Total: -92 bytes
   text    data     bss     dec     hex filename
 676341    2538   12104  690983   a8b27 busybox_old
 676234    2538   12104  690876   a8abc busybox_unstripped

bzip2: update help text

bzip2: implement -1..-9 command line flags

bzip2: eliminate some divisions

remove trailing whitespace

setsebool: new applet (Yuichi Nakamura <ynakam@hitachisoft.jp>)

httpd: fix bug where we were trying to read more POSTDATA than content-length

bzip2: code size shrink

bzip2: remove files which are not used anymore

bzip2: size reduction, to just below 9k.

bzip2: port bzip2 1.0.4 to busybox. note: bzip2 code resides
in separate directory (archival/bz/*)
and is covered by BSD-style license.
code size: 13k

whitespace/style fix

mt: eliminate vector of structures with pointers (bad for libbusybox).
It's a win for static build too:

function                                             old     new   delta
opcode_name                                            -     213    +213
opcode_value                                           -      68     +68
mt_main                                              281     256     -25
opcodes                                              280       -    -280
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 0/1 up/down: 281/-305)          Total: -24 bytes
   text    data     bss     dec     hex filename
 767403     974    9420  777797   bde45 busybox_old
 767224     974    9420  777618   bdd92 busybox_unstripped

stty: incorporate strings into struct instead of keeping pointers there.

static:
   text    data     bss     dec     hex filename
 767535     974    9420  777929   bdec9 busybox_old
 767403     974    9420  777797   bde45 busybox_unstripped

dynamic -fpic:
   text    data     bss     dec     hex filename
 718954   14030   12032  745016   b5e38 busybox_old
 720278   12534   12032  744844   b5d8c busybox_unstripped

vi: don't wait 50 ms before reading ESC sequences
inetd,syslogd: use safe_read instead of open-coded EINTR handling
syslogd: bail out if you see null read from Unix socket
(should never happen, but if it does, spinning forever
and eating 100% CPU is not a good idea)

trim too verbose help texts

fix a problem with two different applet_name's

add -fvisibility=hidden to CC flags, mark XXX_main functions
EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so

add -fpic to CC flags when we build libbusybox (14% smaller .so)

bunzip: small code shrink and consmetics

read_bunzip                                          276     283      +7
get_bits                                             184     162     -22
get_next_block                                      1833    1810     -23
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/2 up/down: 7/-45)             Total: -38 bytes

ip tunnel parameter parsing fix by Jean Wolter <jw5@os.inf.tu-dresden.de>

Move applets/applet.c into libbb, allows to get rid of --whole-archive
(smaller code). Tested in static and shared mode.

get rid of global "struct bb_applet *current_applet"

trylink: s/strip/$STRIP/g

typo fix in help text

trylink: trivial cleanup

trylink: reformat link flags for readability
trylink: add --sort-section alignment:
    text           data     bss     dec     hex filename
-   6557            428    3260   10245    2805 busybox
+   6555            428    3260   10243    2803 busybox
- 909621           1076   12108  922805   e14b5 libbusybox.so.1.8.0.svn
+ 908868           1050   12016  921934   e114e libbusybox.so.1.8.0.svn

trylink: remove useless redirects, add missing error checks

trylink: trivial fixes

make "individual applets" build less noisy.
add *.tmp to list of files deleted by make mrproper.

whitespace fix

add libbb/appletlib.c

make --help work for "individual applets" too.

libbusybox: move (possibly compressed) help stuff into libbusybox.
Makes individual binaries much smaller.

trim too verbose help messages

website: "BusyBox Weekly News" didn't really work, remove link

ash: revert "cat | jobs" fix, it causes more problems than good

reviving libbusybox, adding CONFIG_INDIVIDUAL part 4

reviving libbusybox, adding CONFIG_INDIVIDUAL part 3

reviving libbusybox, adding CONFIG_INDIVIDUAL part 2

reviving libbusybox, adding CONFIG_INDIVIDUAL part 1

- mark TODO: use index_in_str_array()

chpst: fix whitespace damage
svlogd: fix bug (two different "line" variables); stop using data/bss

function                                             old     new   delta
processorstop                                        419     432     +13
rotate                                               514     525     +11
buffer_pwrite                                        493     499      +6
sig_term_handler                                      68      70      +2
sig_hangup_handler                                    34      36      +2
sig_alarm_handler                                     34      36      +2
rmoldest                                             305     307      +2
processorstart                                       401     403      +2
logdir_close                                         188     190      +2
tmaxflag                                               1       -      -1
rotateasap                                             1       -      -1
repl                                                   1       -      -1
reopenasap                                             1       -      -1
linecomplete                                           1       -      -1
exitasap                                               1       -      -1
wstat                                                  4       -      -4
verbose                                                9       5      -4
replace                                                4       -      -4
nearest_rotate                                         4       -      -4
linemax                                                4       -      -4
linelen                                                4       -      -4
line                                                   4       -      -4
fndir                                                  4       -      -4
fl_flag_0                                              4       -      -4
fdwdir                                                 4       -      -4
dirn                                                   4       -      -4
dir                                                    4       -      -4
blocked_sigset                                         4       -      -4
sig_child_handler                                    248     239      -9
logdirs_reopen                                      1263    1240     -23
buffer_pread                                         532     473     -59
svlogd_main                                         1466    1367     -99
------------------------------------------------------------------------------
(add/remove: 0/18 grow/shrink: 9/5 up/down: 42/-248)         Total: -206 bytes
   text    data     bss     dec     hex filename
 770916     989    9496  781401   bec59 busybox_old
 770768     980    9448  781196   beb8c busybox_unstripped

chpst: stop using data/bss

function                                             old     new   delta
chpst_main                                          1066    1089     +23
set_user                                               4       -      -4
root                                                   4       -      -4
nicelvl                                                4       -      -4
limitt                                                 4       -      -4
limits                                               196     192      -4
limitr                                                 4       -      -4
limitp                                                 4       -      -4
limito                                                 4       -      -4
limitl                                                 4       -      -4
limitf                                                 4       -      -4
limitd                                                 4       -      -4
limitc                                                 4       -      -4
limita                                                 4       -      -4
env_user                                               4       -      -4
env_dir                                                4       -      -4
------------------------------------------------------------------------------
(add/remove: 0/14 grow/shrink: 1/1 up/down: 23/-60)           Total: -37 bytes
   text    data     bss     dec     hex filename
 770892    1029    9520  781441   bec81 busybox_old
 770916     989    9496  781401   bec59 busybox_unstripped

stat: code shrink; stop using bss; stop using strncat incorrectly

function                                             old     new   delta
printfs                                                -      28     +28
strcatc                                                -      26     +26
human_time                                            41      44      +3
print_it                                             229     219     -10
buf                                                   30       -     -30
print_statfs                                         420     358     -62
print_stat                                          1089     921    -168
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 1/3 up/down: 57/-270)          Total: -213 bytes
   text    data     bss     dec     hex filename
 771105    1029    9552  781686   bed76 busybox_old
 770892    1029    9520  781441   bec81 busybox_unstripped

delete now unused check_header_gzip.c
sum: do not use uintmax needlessly

tail: sizeof(buf) is sizeof(char*)! must be BUFSIZ

add tests for gunzip

gunzip: support concatenated gz files.

   text    data     bss     dec     hex filename
 770988    1029    9552  781569   bed01 busybox.t0/busybox
 771105    1029    9552  781686   bed76 busybox.t3/busybox

tail: work correctly on /proc files (Kazuo TAKADA <kztakada@sm.sony.co.jp>)

logger: fix a problem of losing all argv except first

- ditch 2 bytes

printf("%s\n") -> puts()

'simple' error message functions by Loic Grenie <loic.grenie@gmail.com>.
263 bytes saved.

hush: fix glob() abuse. Code was making unfounded assumptions how
glob() works, and it broke horribly on specific uclibc config.

hush: int->smallint for flag vars; make some names more "greppable"

hush: feeble attempt at making it more NOMMU-friendly

hush: stop doing manual acounting of open fd's, kernel can do it for us

introduce and use close_on_exec_on(fd). -50 bytes.

move udhcp_{client/server}_config to common_bufsiz1

udhcp_run_script                                    1108    1151     +43
init_packet                                          209     210      +1
udhcpc_main                                         2395    2393      -2
udhcp_client_config                                   56       -     -56
udhcp_server_config                                   88       -     -88
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 2/1 up/down: 44/-146)          Total: -102 bytes
   text    data     bss     dec     hex filename
 771326    1029    9696  782051   beee3 busybox_old
 771383    1029    9552  781964   bee8c busybox_unstripped

dhcpreplay: code shrink, -40 bytes

fixlet to pgrep/pkill

print_signames_and_exit -> print_signames (because of "ash calls kill_main")

replace printf with fputs where appropriate

libiproute: add missing break's

announce 1.7.2 on the website

small code shrink

build system: pass EXTRA_LDFLAGS to final link stage

trivial typo fix

pgrep,pkill: new applets by Loic Grenie <loic.grenie@gmail.com>

xrealloc_getcwd_or_warn: smaller cod and less wasted RAM at run time

remove if() which is always true

bunzip2: trim verbose messages

   text    data     bss     dec     hex filename
 770752    1029    9696  781477   beca5 busybox_old
 770691    1029    9696  781416   bec68 busybox_unstripped

httpd: trivial simplification

more "if (p) free(p)" fixes; fix a typo in comment

fix "if (p) free(p)" constructs

remove stray semicolon

hdparm: paranoia-induced fix against theoretical div-by-0 case

hdparm: more robust (re overflows) code. +38 bytes.

trivial fix in setfiles. spotted by Yuichi Nakamura <ynakam@hitachisoft.jp>

hdparm: reduce possibility of numeric overflow in -T.

do_time                                              386     410     +24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 24/0)               Total: 24 bytes

assorted static vars removal

function                                             old     new   delta
tcpudpsvd_main                                      1829    1839     +10
update_status                                        567     569      +2
sigterm                                                1       -      -1
.........
dhcprelay_signal_handler                               8       -      -8
nfs_strerror                                          60      49     -11
singlemount                                         4579    4564     -15
static.p                                              16       -     -16
svstatus                                              20       -     -20
dhcprelay_xid_list                                    32       -     -32
runsv_main                                          1785    1746     -39
static.buf                                            74      28     -46
svd                                                   56       -     -56
dhcprelay_main                                      1141    1080     -61
------------------------------------------------------------------------------
(add/remove: 0/20 grow/shrink: 2/10 up/down: 12/-386)        Total: -374 bytes

hdparm: simplify timing measurement (it wa the last last user
of setitimer in the tree).

static.thousand                                       16       -     -16
read_big_block                                        81      46     -35
getitimer                                             41       -     -41
setitimer                                             47       -     -47
__GI_setitimer                                        47       -     -47
do_time                                              480     386     -94
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 0/2 up/down: 0/-280)           Total: -280 bytes

M    miscutils/hdparm.c

hdparm: get rid of static variables

process_dev                                         5309    5311      +2
unregister_hwif                                        1       -      -1
...........
Xreadahead                                             4       -      -4
seek_to_zero                                          25      17      -8
hdparm_main                                         1242    1227     -15
do_time                                              547     480     -67
------------------------------------------------------------------------------
(add/remove: 0/83 grow/shrink: 1/3 up/down: 2/-248)          Total: -246 bytes

libbb: make const_int_0 reside in rodata

libbb: align bb_common_bufsiz1 to "long long"

less: make 'f' page forward

wget: -O FILE is allowed to overwrite existing file (compat)

zcip: fix unaligned trap on ARM

remove stray '/*' within comment