We should not use C++ reserved words in API headers (closes issue #10266)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@76409 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/app.h

@@ -189,7 +189,7 @@ int ast_app_group_match_get_count(char *groupmatch, char *category);
 int ast_app_group_discard(struct ast_channel *chan);
 
 /*! Update all group counting for a channel to a new one */
-int ast_app_group_update(struct ast_channel *old, struct ast_channel *new);
+int ast_app_group_update(struct ast_channel *oldchan, struct ast_channel *newchan);
 
 /*! Lock the group count list */
 int ast_app_group_list_lock(void);