When shutting down "gracefully", go through and run the unload() callbacks for

all of the modules.  "stop now" is considered a non-graceful shutdown and will
not go through this process.
(issue #9804, reported by chrisost, patch by me)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@67308 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/module.h

@@ -134,6 +134,13 @@ int ast_loader_register(int (*updater)(void));
  */
 int ast_loader_unregister(int (*updater)(void));
 
+/*!
+ * \brief Run the unload() callback for all loaded modules
+ *
+ * This function should be called when Asterisk is shutting down gracefully.
+ */
+void ast_module_shutdown(void);
+
 /*! 
  * \brief Match modules names for the Asterisk cli.
  * \param line Unused by this function, but this should be the line we are