Update the test suite.

- monkey-patch our own monkey-patched idle_call to run events immediatly
  rather than adding them to the event queue, and add a fake transport
  with a fake socket.
- remove the test file related to xep_0059 as it relies on blocking
  behavior, and comment out one xep_0030 test uses xep_0059
- remove many instances of threading and sleep()s because they do
  nothing except waste time and introduce race conditions.
- keep exactly two sleep() in IoT xeps because they rely on timeouts

tests/test_stream_xep_0249.py

@@ -35,8 +35,6 @@ class TestStreamDirectInvite(SlixTest):
           </message>
         """)
 
-        time.sleep(.5)
-
         self.failUnless(events == [True],
                 "Event not raised: %s" % events)