add a project-specific script to be used during release preparation

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@45410 65c4cc65-6c06-0410-ace0-fbb531ad65f3

build_tools/prep_tarball

@@ -0,0 +1,8 @@
+#!/bin/sh -e
+
+# This script will be executed by the 'mkrelease' script to do any tasks
+# necessary during tarball creation of this project.
+#
+# It will be executed from the top-level directory of the project.
+
+make -C sounds all MENUSELECT_CORE_SOUNDS=CORE-SOUNDS-EN-GSM MENUSELECT_MOH=MOH-FREEPLAY-WAV