deliver events with the core thread pool set events-use-dispatch=true in switch.conf.xml to use the old way

src/include/private/switch_core_pvt.h

@@ -273,6 +273,7 @@ struct switch_runtime {
 	char *core_db_post_trans_execute;
 	char *core_db_inner_pre_trans_execute;
 	char *core_db_inner_post_trans_execute;
+	int events_use_dispatch;
 };
 
 extern struct switch_runtime runtime;

src/include/switch_core.h

@@ -65,6 +65,7 @@ typedef struct switch_thread_data_s {
 	switch_thread_start_t func;
 	void *obj;
 	int alloc;
+	switch_memory_pool_t *pool;
 } switch_thread_data_t;
 
 typedef struct switch_hold_record_s {