Adds gettext support in Grub. Building system needs to be improved and maybe userland utilites improved.

YYYY-MM-DD  Carles Pina i Estany <carles@pina.cat>

	* Makefile.in: Add uptrans target to help to update .pot file
	* conf/common.rmk: Add grub-gettext_lib target, dependency and SOURCES, CFLAGS, LDFLAGS
	* kern/misc.c: Define grub_gettext symbol and add implement grub_gettext_dummy function
	* po/TODO: Temporary file with instructions of what Makefile.in will do
	* po/ca.po: Catalan translation stub
	* include/grub/misc.h: Define macro _(char *s). Declare grub_gettext_dummy and grub_gettext
	* gettext/gettext.c: New file with gettext implementation
	* normal/menu.c (print_message): add _( ) to some strings
	* util/grub.d/10_linux.in: include grub-gettext_lib file. For the Linux menuentry, call eval_gettext
	* util/grub.d/00_header.in: add locale_prefix and gettext locale detection and setting up the access to the mo directory
	* util/grub-mkconfig_lib.in: add get_locale_lang
	* util/grub-gettext_lib.in: new file

util/grub-mkconfig_lib.in

@@ -215,3 +215,14 @@ version_find_latest ()
   done
   echo "$a"
 }
+
+get_locale_lang ()
+{
+  lang="`echo ${LANG} | cut -d _ -f 1`"
+  if [ "x${lang}" = "x" ] ; then
+    return 1
+  else
+    echo "${lang}"
+    return 0
+  fi
+}