Factor code out of main.cc and main.i into a bunch of files

so things are organized in a more sensible manner.  Take apart
finalInit and expose the individual functions which are now
called from python.  Make checkpointing a bit easier to use.

--HG--
extra : convert_revision : f470ddabbb47103e7b4734ef753c40089f2dcd9d

src/python/m5/params.py

@@ -894,9 +894,8 @@ class PortRef(object):
         if self.ccConnected: # already done this
             return
         peer = self.peer
-        internal.main.connectPorts(self.simobj.getCCObject(), self.name,
-                                   self.index, peer.simobj.getCCObject(),
-                                   peer.name, peer.index)
+        internal.sim_object.connectPorts(self.simobj.getCCObject(), self.name,
+            self.index, peer.simobj.getCCObject(), peer.name, peer.index)
         self.ccConnected = True
         peer.ccConnected = True