Enclose all translated strings in grub.cfg in single quotes, and

escape them appropriately (Ubuntu bug #552921).
* util/grub-mkconfig_lib.in (gettext_quoted): New function.
* util/grub.d/10_hurd.in: Use it.
* util/grub.d/10_kfreebsd.in (kfreebsd_entry): Likewise.
* util/grub.d/10_linux.in (linux_entry): Likewise.
	Also-By: Colin Watson <cjwatson@ubuntu.com>

util/grub-mkconfig_lib.in

@@ -188,3 +188,7 @@ version_find_latest ()
   done
   echo "$a"
 }
+
+gettext_quoted () {
+  gettext "$@" | sed "s/'/'\\\\''/g"
+}