#18 StSpawn exit code

[Bill Florac]

Add a "Last Exit Code" property.
By calling GetExitCodeProcess, you can get the last exit
code of an application.

I added this in the TStSpawnApplication.DoOnThreadEnd
procedure just before the notify event is called.

GetExitCodeProcess(FWaitThread.WaitFors^
[0],FLastExitCode);