fix for EXIT trap in -c command; suspend -f now suspends even if job control is not enabled

execute_cmd.c

@@ -2515,6 +2515,9 @@ execute_pipeline (command, asynchronous, pipe_in, pipe_out, fds_to_close)
   prev = pipe_in;
   cmd = command;
 
+if (asynchronous)
+  itrace("execute_pipeline: asynchronous = 1");
+
   while (cmd && cmd->type == cm_connection &&
 	 cmd->value.Connection && cmd->value.Connection->connector == '|')
     {