Child processes send trace information back to the parent. Also fixed weird double-activation of children.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3729 ed5197a5-7fde-0310-b194-c3ffbd925b24

src/main.c

@@ -481,7 +481,7 @@ static int _tf_command_sandbox(const char* file, int argc, char* argv[])
 	tf_task_t* task = tf_task_create();
 	tf_task_configure_from_stdin(task);
 	shedPrivileges();
-	tf_task_activate(task);
+	/* The caller will trigger tf_task_activate with a message. */
 	tf_task_run(task);
 	tf_task_destroy(task);
 	return 0;