Change the return value of drain. False means the object wasn't able to drain yet.

src/python/m5/config.py:
    Invert the return value.
src/sim/sim_object.cc:
    Invert the return value of drain.
src/sim/sim_object.hh:
    Change the return value of drain.

--HG--
extra : convert_revision : 41bb122c6f29302d8b3815d7bd6a2ea8fba64df9

src/python/m5/config.py

@@ -547,7 +547,7 @@ class SimObject(object):
         count = 0
         # ParamContexts don't serialize
         if isinstance(self, SimObject) and not isinstance(self, ParamContext):
-            if self._ccObject.drain(drain_event):
+            if not self._ccObject.drain(drain_event):
                 count = 1
         if recursive:
             for child in self._children.itervalues():