Make stratum connection interrupted message higher priority to be visible at normal logging levels.

cgminer.c

@@ -4886,7 +4886,7 @@ static void *stratum_thread(void *userdata)
 		else
 			s = recv_line(pool);
 		if (!s) {
-			applog(LOG_INFO, "Stratum connection to pool %d interrupted", pool->pool_no);
+			applog(LOG_NOTICE, "Stratum connection to pool %d interrupted", pool->pool_no);
 			pool->getfail_occasions++;
 			total_go++;