(AC_CHECK_DECLS): Add getenv, getopt.

(AM_GNU_GETTEXT_VERSION): New macro, replacing GETTEXT_VERSION var.
Bump version from 0.11.2 to 0.11.5.
(BISON_PREREQ_STAGE): Remove.
(AM_GNU_GETTEXT): Use external gettext.
(AC_OUTPUT): Remove intl/Makefile.

configure.in

@@ -92,7 +92,7 @@ AC_FUNC_ERROR_AT_LINE
 AC_FUNC_STRNLEN
 UTILS_FUNC_MKSTEMP
 AC_CHECK_FUNCS(setlocale)
-AC_CHECK_DECLS([free, stpcpy, strchr, strspn, strnlen,
+AC_CHECK_DECLS([getenv, getopt, free, stpcpy, strchr, strspn, strnlen,
                 malloc, memchr, memrchr])
 AC_REPLACE_FUNCS(stpcpy strchr strspn memchr memrchr)
 jm_FUNC_MALLOC
@@ -101,11 +101,10 @@ jm_PREREQ_QUOTEARG
 jm_PREREQ_ERROR
 AM_WITH_DMALLOC
 BISON_PREREQ_TIMEVAR
-BISON_PREREQ_STAGE
 
 # Gettext.
-GETTEXT_VERSION=0.11.2
-AM_GNU_GETTEXT(, need-ngettext)
+AM_GNU_GETTEXT(external, need-ngettext)
+AM_GNU_GETTEXT_VERSION(0.11.5)
 
 # This is necessary so that .o files in LIBOBJS are also built via
 # the ANSI2KNR-filtering rules.
@@ -114,7 +113,7 @@ AC_SUBST(LIB@&t@OBJS)
 
 AC_OUTPUT([Makefile
            config/Makefile
-           intl/Makefile po/Makefile.in
+           po/Makefile.in
            data/Makefile
            lib/Makefile src/Makefile doc/Makefile
            m4/Makefile])