Add native Windows binary for bison.

bison/src/bison/2.4.1/bison-2.4.1-src/m4/bison-i18n.m4

Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/bison-i18n.m4
===================================================================
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/bison-i18n.m4	(revision 0)
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/bison-i18n.m4	(revision 0)
@@ -0,0 +1,48 @@
+# bison-i18n.m4 serial 2
+dnl Copyright (C) 2005-2006 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Support for internationalization of bison-generated parsers.
+
+dnl BISON_I18N
+dnl should be used in configure.ac, after AM_GNU_GETTEXT. If USE_NLS is yes, it
+dnl sets BISON_LOCALEDIR to indicate where to find the bison-runtime.mo files
+dnl and defines YYENABLE_NLS if there are bison-runtime.mo files at all.
+AC_DEFUN([BISON_I18N],
+[
+  if test -z "$USE_NLS"; then
+    echo "The BISON-I18N macro is used without being preceded by AM-GNU-GETTEXT." 1>&2
+    exit 1
+  fi
+  BISON_LOCALEDIR=
+  BISON_USE_NLS=no
+  if test "$USE_NLS" = yes; then
+    dnl Determine bison's localedir.
+    dnl AC_PROG_YACC sets the YACC variable; other macros set the BISON variable.
+    dnl But even is YACC is called "yacc", it may be a script that invokes bison
+    dnl and accepts the --print-localedir option.
+    dnl YACC's default value is empty; BISON's default value is :.
+    if (${YACC-${BISON-:}} --print-localedir) >/dev/null 2>&1; then
+      BISON_LOCALEDIR=`${YACC-${BISON-:}} --print-localedir`
+    fi
+    AC_SUBST([BISON_LOCALEDIR])
+    if test -n "$BISON_LOCALEDIR"; then
+      dnl There is no need to enable internationalization if the user doesn't
+      dnl want message catalogs.  So look at the language/locale names for
+      dnl which the user wants message catalogs.  This is $LINGUAS.  If unset
+      dnl or empty, he wants all of them.
+      USER_LINGUAS="${LINGUAS-%UNSET%}"
+      if test -n "$USER_LINGUAS"; then
+        BISON_USE_NLS=yes
+      fi
+    fi
+  fi
+  if test $BISON_USE_NLS = yes; then
+    AC_DEFINE([YYENABLE_NLS], 1,
+      [Define to 1 to internationalize bison runtime messages.])
+  fi
+])