• 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

var.c

@@ -26,7 +26,7 @@
 #include <sys/sysctl.h>
 #endif
 
-__RCSID("$MirOS: src/bin/mksh/var.c,v 1.115 2011/01/21 21:04:48 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/var.c,v 1.116 2011/02/11 01:18:23 tg Exp $");
 
 /*
  * Variables
@@ -1084,7 +1084,8 @@ setspec(struct tbl *vp)
 			afree(path, APERM);
 		s = str_val(vp);
 		strdupx(path, s, APERM);
-		flushcom(1);	/* clear tracked aliases */
+		/* clear tracked aliases */
+		flushcom(true);
 		return;
 	case V_IFS:
 		setctypes(s = str_val(vp), C_IFS);
@@ -1182,7 +1183,8 @@ unsetspec(struct tbl *vp)
 		if (path)
 			afree(path, APERM);
 		strdupx(path, def_path, APERM);
-		flushcom(1);	/* clear tracked aliases */
+		/* clear tracked aliases */
+		flushcom(true);
 		break;
 	case V_IFS:
 		setctypes(" \t\n", C_IFS);