• remove strcasestr.c, use home-grown implementation¹, call it stricmp,

and have it return an API-correct const char *
• enhance and stylify comments
• a little KNF and simplifications
• #ifdef DEBUG: replace strchr and strstr with ucstrchr and ucstrstr
  that take and return a non-const char *, and fix the violations
• new cstrchr, cstrstr (take and give const char *)
• new vstrchr, vstrstr (take const or not, give boolean value)
• new afreechk(x) = afreechv(x,x) = if (x1) afree(x2, ATEMP)
• new ksh_isdash(str) = (str != NULL) && !strcmp(str, "-")
• replace the only use of strrchr with inlined code to shrink
• minor man page fixes
• Minix 3 signames are autogenerated with gcc
• rename strlfun.c to strlcpy.c since we don't do strlcat(3) anyway,
  only strlcpy(3), and shorten it
• dot.mkshrc: move MKSH=… down to the export line
  to not disturb the PS1 visual impression ☺
• dot.mkshrc: Lstripcom(): optimise
• bump version

¹) side effect from creating API-correct cstrchr, cstrstr, etc.
   uses goto so it must be better ☻

tested on mirbsd-current via both Makefile and Build.sh

main.c

@@ -13,7 +13,7 @@
 #include <locale.h>
 #endif
 
-__RCSID("$MirOS: src/bin/mksh/main.c,v 1.72 2007/03/04 00:13:16 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/main.c,v 1.73 2007/03/04 03:04:26 tg Exp $");
 
 extern char **environ;
 
@@ -292,7 +292,7 @@ main(int argc, const char *argv[])
 #ifndef MKSH_ASSUME_UTF8
 #if HAVE_SETLOCALE_CTYPE
 #define isuc(x)	(((x) != NULL) && \
-		    (strcasestr((x), "UTF-8") || strcasestr((x), "utf8")))
+		    (stristr((x), "UTF-8") || stristr((x), "utf8")))
 		/* Check if we're in a UTF-8 locale */
 		if (!Flag(FUTFHACK)) {
 			cc = setlocale(LC_CTYPE, "");