add mutex around gateway access on per-profile basis and token based access to global profiles to prevent hanging on to the hash mutex while doing sql stmts which may cause issues/slowdowns

src/mod/endpoints/mod_sofia/sofia.c

@@ -3055,6 +3055,9 @@ switch_status_t config_sofia(int reload, char *profile_name)
 					goto done;
 				}
 
+
+				switch_mutex_init(&profile->gw_mutex, SWITCH_MUTEX_NESTED, pool);
+
 				profile->trans_timeout = 100;
 
 				profile->auto_rtp_bugs = RTP_BUG_CISCO_SKIP_MARK_BIT_2833;// | RTP_BUG_SONUS_SEND_INVALID_TIMESTAMP_2833;