• 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

Makefile

@@ -1,6 +1,6 @@
-# $MirOS: src/bin/mksh/Makefile,v 1.85 2011/01/30 02:28:31 tg Exp $
+# $MirOS: src/bin/mksh/Makefile,v 1.86 2011/02/11 01:18:14 tg Exp $
 #-
-# Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+# Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
 #	Thorsten Glaser <tg@mirbsd.org>
 #
 # Provided that these terms and disclaimer and all copyright notices
@@ -30,8 +30,10 @@ CPPFLAGS+=	-DMKSH_ASSUME_UTF8 \
 		-DHAVE_ATTRIBUTE_BOUNDED=1 -DHAVE_ATTRIBUTE_FORMAT=1 \
 		-DHAVE_ATTRIBUTE_NONNULL=1 -DHAVE_ATTRIBUTE_NORETURN=1 \
 		-DHAVE_ATTRIBUTE_UNUSED=1 -DHAVE_ATTRIBUTE_USED=1 \
-		-DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_FILE_H=1 -DHAVE_SYS_MKDEV_H=0 \
-		-DHAVE_SYS_MMAN_H=1 -DHAVE_SYS_SYSMACROS_H=0 -DHAVE_GRP_H=1 \
+		-DHAVE_SYS_BSDTYPES_H=0 -DHAVE_SYS_FILE_H=1 \
+		-DHAVE_SYS_MKDEV_H=0 -DHAVE_SYS_MMAN_H=1 \
+		-DHAVE_SYS_PARAM_H=1 -DHAVE_SYS_SELECT_H=1 \
+		-DHAVE_SYS_SYSMACROS_H=0 -DHAVE_BSTRING_H=0 -DHAVE_GRP_H=1 \
 		-DHAVE_LIBGEN_H=1 -DHAVE_LIBUTIL_H=0 -DHAVE_PATHS_H=1 \
 		-DHAVE_STDBOOL_H=1 -DHAVE_STDINT_H=1 -DHAVE_STRINGS_H=1 \
 		-DHAVE_ULIMIT_H=0 -DHAVE_VALUES_H=0 -DHAVE_CAN_INTTYPES=1 \
@@ -41,9 +43,10 @@ CPPFLAGS+=	-DMKSH_ASSUME_UTF8 \
 		-DHAVE_GETRUSAGE=1 -DHAVE_KILLPG=1 -DHAVE_MKNOD=0 \
 		-DHAVE_MKSTEMP=1 -DHAVE_NICE=1 -DHAVE_REVOKE=1 \
 		-DHAVE_SETLOCALE_CTYPE=0 -DHAVE_LANGINFO_CODESET=0 \
-		-DHAVE_SETRESUGID=1 -DHAVE_SETGROUPS=1 -DHAVE_STRCASESTR=1 \
-		-DHAVE_STRLCPY=1 -DHAVE_FLOCK_DECL=1 -DHAVE_REVOKE_DECL=1 \
-		-DHAVE_SYS_SIGLIST_DECL=1 -DHAVE_PERSISTENT_HISTORY=1
+		-DHAVE_SELECT=1 -DHAVE_SETRESUGID=1 -DHAVE_SETGROUPS=1 \
+		-DHAVE_STRCASESTR=1 -DHAVE_STRLCPY=1 -DHAVE_FLOCK_DECL=1 \
+		-DHAVE_REVOKE_DECL=1 -DHAVE_SYS_SIGLIST_DECL=1 \
+		-DHAVE_PERSISTENT_HISTORY=1
 COPTS+=		-std=gnu99 -Wall
 .endif
 
@@ -54,8 +57,14 @@ SRCS+=		printf.c
 CPPFLAGS+=	-DMKSH_PRINTF_BUILTIN
 .endif
 
-LINKS+=		${BINDIR}/${PROG} ${BINDIR}/sh
-MLINKS+=	${PROG}.1 sh.1
+MANLINKS=	[ false pwd sh sleep test true
+BINLINKS=	${MANLINKS} echo domainname kill
+.for _i in ${BINLINKS}
+LINKS+=		${BINDIR}/${PROG} ${BINDIR}/${_i}
+.endfor
+.for _i in ${MANLINKS}
+MLINKS+=	${PROG}.1 ${_i}.1
+.endfor
 
 regress: ${PROG} check.pl check.t
 	-rm -rf regress-dir