More Python hacking to deal with config.py split

and resulting recursive import trickiness.

--HG--
extra : convert_revision : 1ea93861eb8d260c9f3920dda0b8106db3e03705

src/python/m5/objects/BaseCPU.py

@@ -1,5 +1,7 @@
+from m5.SimObject import SimObject
+from m5.params import *
+from m5.proxy import *
 from m5 import build_env
-from m5.config import *
 from AlphaTLB import AlphaDTB, AlphaITB
 from Bus import Bus