- merge -r15463:15564 from busybox_scratch branch through these changesets:

------------------------------------------------------------------------
r15465 | aldot | 2006-06-21 20:48:06 +0200 (Wed, 21 Jun 2006) | 3 lines

- use CONFIG_BUSYBOX_EXEC_PATH as before it one was broken by a recent revert.
- use xchdir() since all is invain if it fails there anyways, supposedly

------------------------------------------------------------------------
r15466 | aldot | 2006-06-21 20:55:16 +0200 (Wed, 21 Jun 2006) | 2 lines

- adjust docs to take CONFIG_BUSYBOX_EXEC_PATH into account.

------------------------------------------------------------------------
r15467 | aldot | 2006-06-21 21:31:24 +0200 (Wed, 21 Jun 2006) | 18 lines

- partial fallout of my TREE_USED touchup against gcc-4.2: rip unused vars, save
s 144 bytes
   text    data     bss     dec     hex filename
 862434   10156  645924 1518514  172bb2 busybox.old
 862322   10156  645892 1518370  172b22 busybox
function                                             old     new   delta
z_len                                                  4       -      -4
textend                                                4       -      -4
part_nb                                                4       -      -4
insize                                                 4       -      -4
ifile_size                                             4       -      -4
do_link                                                4       -      -4
new_text                                              70      60     -10
ipaddr_list_link                                      33      23     -10
gzip_main                                            898     822     -76
------------------------------------------------------------------------------
(add/remove: 0/6 grow/shrink: 0/3 up/down: 0/-120)           Total: -120 bytes


------------------------------------------------------------------------
r15468 | aldot | 2006-06-21 21:43:05 +0200 (Wed, 21 Jun 2006) | 19 lines

- remove useless global exports
function                                             old     new   delta
rpm_main                                             940    1601    +661
rpm_getstring                                        107     112      +5
rpm_getint                                           148     153      +5
loop_through_files                                   103     106      +3
fileaction_dobackup                                  115     113      -2
fileaction_list                                        5       -      -5
rpm_getcount                                          42       -     -42
extract_cpio_gz                                      161       -    -161
rpm_gettags                                          504       -    -504
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 4/1 up/down: 674/-714)          Total: -40 bytes

   text    data     bss     dec     hex filename
 862322   10156  645892 1518370  172b22 busybox.old
 862290   10156  645892 1518338  172b02 busybox


------------------------------------------------------------------------
r15555 | aldot | 2006-06-30 14:10:11 +0200 (Fri, 30 Jun 2006) | 22 lines

- shrink syslog a little bit, move a big buffer (for 'line') off the bss, fold s
emaphore stuff into single caller manually.
  stats:
function                                             old     new   delta
logMessage                                           395     427     +32
message                                             1245    1257     +12
opts                                                   -       4      +4
small                                                  1       -      -1
local_logging                                          4       -      -4
doRemoteLog                                            4       -      -4
circular_logging                                       4       -      -4
syslogd_main                                        1299    1285     -14
static.res                                            36      16     -20
.rodata                                           186650  186586     -64
static.line                                         1025       -   -1025
------------------------------------------------------------------------------
(add/remove: 1/5 grow/shrink: 2/3 up/down: 48/-1136)        Total: -1088 bytes
cow@s37:~/src/busybox_scratch$ size sysklogd/syslogd.o{.orig,}
   text    data     bss     dec     hex filename
   3723     348    5242    9313    2461 sysklogd/syslogd.o.orig
   3697     348    4188    8233    2029 sysklogd/syslogd.o

==============================================================================
Overall bloatcheck for the changeset mentioned above:
function                                             old     new   delta
rpm_main                                             953    1608    +655
logMessage                                           395     427     +32
message                                             1245    1257     +12
opts                                                   -       4      +4
rpm_getstring                                        107     110      +3
rpm_getint                                           148     151      +3
loop_through_files                                   103     104      +1
small                                                  1       -      -1
fileaction_dobackup                                  115     113      -2
z_len                                                  4       -      -4
textend                                                4       -      -4
part_nb                                                4       -      -4
local_logging                                          4       -      -4
insize                                                 4       -      -4
ifile_size                                             4       -      -4
do_link                                                4       -      -4
doRemoteLog                                            4       -      -4
circular_logging                                       4       -      -4
fileaction_list                                        5       -      -5
new_text                                              70      60     -10
ipaddr_list_link                                      33      23     -10
clear_bufs                                            31      21     -10
syslogd_main                                        1287    1273     -14
builtin_help                                         190     176     -14
static.res                                            36      16     -20
builtin_source                                       229     199     -30
rpm_getcount                                          42       -     -42
gzip_main                                            842     786     -56
.rodata                                           227176  227112     -64
lash_main                                            609     527     -82
busy_loop                                           3883    3739    -144
extract_cpio_gz                                      155       -    -155
rpm_gettags                                          501       -    -501
static.line                                         1025       -   -1025
------------------------------------------------------------------------------
(add/remove: 1/15 grow/shrink: 6/12 up/down: 710/-2221)     Total: -1511 bytes

1 files changed, 5 insertions, 10 deletions

diff --git a/editors/vi.c b/editors/vi.c
index 593dc8520..3cbf6937d 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -116,7 +116,7 @@ static Byte *status_buffer;	// mesages to the user
 static int have_status_msg;     // is default edit status needed?
 static int last_status_cksum;   // hash of current status line
 static Byte *cfn;               // previous, current, and next file name
-static Byte *text, *end, *textend;      // pointers to the user data in memory
+static Byte *text, *end;        // pointers to the user data in memory
 static Byte *screen;            // pointer to the virtual screen buffer
 static int screensize;          //            and its size
 static Byte *screenbegin;       // index into text[], of top line on the screen
@@ -582,7 +582,7 @@ static void colon(Byte * buf)
 {
         Byte c, *orig_buf, *buf1, *q, *r;
         Byte *fn, cmd[BUFSIZ], args[BUFSIZ];
-        int i, l, li, ch, st, b, e;
+        int i, l, li, ch, b, e;
         int useforce = FALSE, forced = FALSE;
         struct stat st_buf;
 
@@ -606,7 +606,7 @@ static void colon(Byte * buf)
         if (*buf == ':')
                 buf++;                  // move past the ':'
 
-        li = st = ch = i = 0;
+        li = ch = i = 0;
         b = e = -1;
         q = text;                       // assume 1,$ for the range
         r = end - 1;
@@ -1075,14 +1075,13 @@ static void Hit_Return(void)
 //----- Synchronize the cursor to Dot --------------------------
 static void sync_cursor(Byte * d, int *row, int *col)
 {
-        Byte *beg_cur;                          // begin and end of "d" line
-        Byte *beg_scr, *end_scr;        // begin and end of screen
+        Byte *beg_cur;  // begin and end of "d" line
+        Byte *end_scr;  // begin and end of screen
         Byte *tp;
         int cnt, ro, co;
 
         beg_cur = begin_line(d);        // first char of cur line
 
-        beg_scr = end_scr = screenbegin;        // first char of screen
         end_scr = end_screen(); // last char of screen
 
         if (beg_cur < screenbegin) {
@@ -1385,8 +1384,6 @@ static Byte *new_text(int size)
         text = (Byte *) xmalloc(size + 8);
         memset(text, '\0', size);       // clear new text[]
         //text += 4;            // leave some room for "oops"
-        textend = text + size - 1;
-        //textend -= 4;         // leave some root for "oops"
         return (text);
 }
 
@@ -1963,9 +1960,7 @@ static Byte *text_yank(Byte * p, Byte * q, int dest)	// copy text into a registe
 static Byte what_reg(void)
 {
         Byte c;
-        int i;
 
-        i = 0;
         c = 'D';                        // default to D-reg
         if (0 <= YDreg && YDreg <= 25)
                 c = 'a' + (Byte) YDreg;