A linux sleeping (suspended) process, when attached, does not generate a
wait-stopped event. This can leave the state machine dangling.
I'm not sure what the problem is here. I've tried fstack and FryskGui both on
evolution and they seem to work fine.
* LinuxTask.java (sendAttach): Manually tell the thread that the process
has been attached Fixes 3316.
* TestProcStopped.java: Added license.
(testStoppedAckDaemon): Changed to use stopped.
(MyTester): Changed to stop eventloop after an attach.