[SHELL] Port to AIX

- AIX lacks a WCOREDUMP macro.  It's just used to
  append "(core dumped)" to the crash message, so
  #ifdef around it.

- For some reason, the nl program on AIX defaults
  to not printing line numbers ("-b n"), even though
  the spec says it should default to "-b t".
  Explicitly pass "-b a" for good measure in mkbuiltins.

Signed-off-by: Brian Koropoff <bkoropoff@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

ChangeLog

diff --git a/ChangeLog b/ChangeLog
index a64e030..173f057 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2011-03-10  Brian Koropoff <bkoropoff@gmail.com>
+
+	* Port to AIX.
+
 2011-03-10  Jilles Tjoelker <jilles@stack.nl>
 
 	* Replace GPL noclobberopen code with the FreeBSD version.

src/jobs.c

diff --git a/src/jobs.c b/src/jobs.c
index 826a9af..f67116e 100644
--- a/src/jobs.c
+++ b/src/jobs.c
@@ -426,9 +426,11 @@
 #endif
 		}
 		col = fmtstr(s, 32, strsignal(st));
+#ifdef WCOREDUMP
 		if (WCOREDUMP(status)) {
 			col += fmtstr(s + col, 16, " (core dumped)");
 		}
+#endif
 	} else if (!sigonly) {
 		if (st)
 			col = fmtstr(s, 16, "Done(%d)", st);

src/mkbuiltins

diff --git a/src/mkbuiltins b/src/mkbuiltins
index e38ce4c..99107c2 100644
--- a/src/mkbuiltins
+++ b/src/mkbuiltins
@@ -84,7 +84,7 @@
  */
 
 !
-sed 's/	-[a-z]*//' $temp2 | nl -v 0 | LC_COLLATE=C sort -u -k 3,3 |
+sed 's/	-[a-z]*//' $temp2 | nl -b a -v 0 | LC_COLLATE=C sort -u -k 3,3 |
 tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ |
 	awk '{	printf "#define %s (builtincmd + %d)\n", $3, $1}'
 printf '\n#define NUMBUILTINS %d\n' $(wc -l < $temp2)