Always submit "_project" pseudo-packages

And check for code="succeeded" for all others.
Workaround for osc copypac trace

ATM, osc bails out with the following tracer after a successful copypac:

Copying files...
Traceback (most recent call last):
  File "/usr/bin/osc", line 26, in <module>
    r = babysitter.run(osccli)
  File "/usr/lib64/python2.6/site-packages/osc/babysitter.py", line 60, in run
    return prg.main(argv)
  File "/usr/lib64/python2.6/site-packages/osc/cmdln.py", line 343, in main
    return self.cmd(args)
  File "/usr/lib64/python2.6/site-packages/osc/cmdln.py", line 366, in cmd
    retval = self.onecmd(argv)
  File "/usr/lib64/python2.6/site-packages/osc/cmdln.py", line 484, in onecmd
    return self._dispatch_cmd(handler, argv)
  File "/usr/lib64/python2.6/site-packages/osc/cmdln.py", line 1214, in _dispatch_cmd
    return handler(argv[0], opts, *args)
  File "/usr/lib64/python2.6/site-packages/osc/commandline.py", line 2624, in do_copypac
    print(r.read())
AttributeError: 'str' object has no attribute 'read'

Just ignore the issue unti this is solved