apply accumulated post 1.8.0 fixes, bump version to 1.8.1

Announce 1.8.0

docs: fix new-applet-HOWTO.txt, delete ipv4_ipv6.txt (it's obsolete)

Announce 1.7.3 on website

ifconfig: code shrink
adjtimex: code shrink
libbb: move nth_string function into libbb
hdparm: nth_string was here

   text    data     bss     dec     hex filename
 730013   10334   12032  752379   b7afb busybox_old
 730093   10134   12032  752259   b7a83 busybox_unstripped

grep: fix -Fo

insmod: code shrink, stop exporting insmod_ng_main.

function                                             old     new   delta
add_ksymoops_symbols                                   -     421    +421
static.section_names                                  20      40     +20
lsmod_main                                           425     424      -1
set_tainted                                          153     150      -3
main_opts                                              4       -      -4
obj_symbol_patch                                      47      42      -5
obj_string_patch                                     144     139      -5
already_loaded                                       144     138      -6
check_dep                                            348     341      -7
append_option                                         75      68      -7
obj_allocate_commons                                 515     501     -14
new_process_module_arguments                        1039    1018     -21
arch_new_symbol                                       31       9     -22
check_module_name_match                               85      61     -24
obj_create_alloced_section                           164     136     -28
include_conf                                         930     902     -28
modprobe_main                                       1643    1535    -108
obj_load                                             924     777    -147
insmod_ng_main                                       245       -    -245
insmod_main                                         4122    3794    -328
------------------------------------------------------------------------------
(add/remove: 1/2 grow/shrink: 1/16 up/down: 441/-1003)       Total: -562 bytes
   text    data     bss     dec     hex filename
 776020     974    9420  786414   bffee busybox_old
 775384     974    9420  785778   bfd72 busybox_unstripped

inetd: fix bug 1562 "inetd does not set argv[0] properly" (fix by IlyaPanfilov)
inetd: code shrink while at it

function                                             old     new   delta
static.SOCK_xxx                                        -       6      +6
getconfigent                                        1222    1123     -99
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 6/-99)             Total: -93 bytes
   text    data     bss     dec     hex filename
 776099     974    9420  786493   c003d busybox_old
 776020     974    9420  786414   bffee busybox_unstripped

hdparm: code shrink

   text    data     bss     dec     hex filename
 776494     974    9420  786888   c01c8 busybox_old
 776099     974    9420  786493   c003d busybox_unstripped

e2fsprogs: code shrink

   text    data     bss     dec     hex filename
 776594     974    9420  786988   c022c busybox_old
 776494     974    9420  786888   c01c8 busybox_unstripped

- fix typo in helptext

minor fix in comment, no code changes

ll_types.c: optimize link type table, make it conditional
            on FEATURE_IP_RARE_PROTOCOLS

function                                             old     new   delta
static.arphrd_name                                     -     373    +373
static.arphrd_type                                     -     124    +124
ll_type_n2a                                           58      78     +20
static.arphrd_names                                  496       -    -496
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 1/0 up/down: 517/-496)           Total: 21 bytes
   text    data     bss     dec     hex filename
 776880     974    9420  787274   c034a busybox_old
 776594     974    9420  786988   c022c busybox_unstripped

appletlib.c: make it actally follow _BB_SUID_ALWAYS rules
adduser: implement -S and code shrink / fix uid selection
*: sanitize getspnam_r use

   text    data     bss     dec     hex filename
 777042     974    9676  787692   c04ec busybox_old
 776883     974    9676  787533   c044d busybox_unstripped

syscall: code shrink

   text    data     bss     dec     hex filename
 777209     974    9676  787859   c0593 busybox_old
 777042     974    9676  787692   c04ec busybox_unstripped

mount: size-optimize mount_options[] and nfs_errtbl[]

 777253     974    9676  787903   c05bf busybox_old
 777209     974    9676  787859   c0593 busybox_unstripped

ash: if tcgetattr(stdin) fails, don't mess with tcsetattr
ash: size-optimize ulimit's table of limits

   text    data     bss     dec     hex filename
 777345     974    9676  787995   c061b busybox_old
 777253     974    9676  787903   c05bf busybox_unstripped

svlogd: fix compat problem: svlogd -tt should timestanp stderr too

httpd: fix trivial bug (spotted by Alex Landau)

bzip2: make -d actually work

bb_askpass: handle Ctrl-C, restore termoios on Ctrl-C.
sulogin: remove alarm handling, as it is redundant there.
code shrink. After all differences cancel out:

   text    data     bss     dec     hex filename
 777543    1000    9532  788075   c066b busybox_old
 777543    1000    9532  788075   c066b busybox_unstripped

read_line_input: fix it to not do any fancy editing if echoing is disabled.
ash: make read handling both more correct and smaller

read_line_input                                     4037    4101     +64
input_backward                                       140     139      -1
readcmd                                             1079    1070      -9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 65/-10)             Total: 54 bytes
   text    data     bss     dec     hex filename
 777575    1000    9532  788107   c068b busybox_old
 777629    1000    9532  788161   c06c1 busybox_unstripped

more fixes for help text wrt long options

website: add link to "No ifup" document

ping: fix breakage from -I fix
passwd: SELinux support by KaiGai Kohei <kaigai@ak.jp.nec.com>

kbd_mode: new applet by Loïc Grenié <loic.grenie@gmail.com>

kbd_mode_main                                          -     189    +189
packed_usage                                       22745   22833     +88
applets                                             3132    3144     +12
static.opts                                            7      12      +5
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/0 up/down: 294/0)             Total: 294 bytes
   text    data     bss     dec     hex filename
 777210    1000    9532  787742   c051e busybox_old
 777575    1000    9532  788107   c068b busybox_unstripped

mkswap: selinux support by KaiGai Kohei <kaigai@ak.jp.nec.com>

paing: make -I ethN work too (-I addr already worked)

unzip: add a comment explaining why we don't die

unzip: fix endianness bugs

httpd: free big buffer after use; improve grep-ability of 'headers' variable

xatonum.h: add comment
lineedit: fix typo in comment
httpd: support for proxying connection to other http server
(by Alex Landau <landau_alex@yahoo.com>)

more of usage text fixes wrt long options

exclude --longopts from usage texts if those are disabled

snv add setsebool

telnetd: make sure telnetd -K exits if child dies

telnetd: trivial optimization

ash: use fdprintf, not dprintf.
*: trailing whitespace removed

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