• more comment and int→bool cleanup, add and improve some comments

• in interactive mode, always look up {LC_{ALL,CTYPE},LANG} environment
  variables if setlocale/nl_langinfo(CODESET) doesn’t suffice
• add the ability to call any builtin (some don't make sense or wouldn't
  work) directly by analysing argv[0]
• for direct builtin calls, the {LC_{ALL,CTYPE},LANG} environment
  variables determine utf8-mode, even if MKSH_ASSUME_UTF8 was set
• when called as builtin, echo behaves POSIXish
• add domainname as alias for true on MirBSD only, to be able to link it
• sync mksh Makefiles with Build.sh output
• adjust manpage wrt release plans
• link some things to mksh now that we have callable builtins:
  bin/echo bin/kill bin/pwd bin/sleep (exact matches)
  bin/test bin/[ (were scripts before)
  bin/domainname=usr/bin/true usr/bin/false (move to /bin/ now)
• drop linked utilities and, except for echo and kill, their manpages
• adjust instbin and link a few more there as well

sh_flags.h

@@ -1,5 +1,5 @@
 #if defined(SHFLAGS_DEFNS)
-__RCSID("$MirOS: src/bin/mksh/sh_flags.h,v 1.7 2010/07/13 13:07:58 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/sh_flags.h,v 1.8 2011/02/11 01:18:23 tg Exp $");
 #define FN(sname,cname,ochar,flags)	/* nothing */
 #elif defined(SHFLAGS_ENUMS)
 #define FN(sname,cname,ochar,flags)	cname,
@@ -135,6 +135,9 @@ FN(NULL, FCOMMAND, 'c', OF_CMDLINE)
  * anonymous flags: used internally by shell only (not visible to user)
  */
 
+/* ./.	direct builtin call (divined from argv[0] multi-call binary) */
+FN(NULL, FAS_BUILTIN, 0, OF_INTERNAL)
+
 /* ./.	(internal) initial shell was interactive */
 FN(NULL, FTALKING_I, 0, OF_INTERNAL)