some drain changes in timing (kevin's) and some memory mode assertion changes so...

some drain changes in timing (kevin's) and some memory mode assertion changes so that when you come out of resume, you only assert if you're really wrong.

src/cpu/simple/atomic.cc:
    memory mode assertion change so that it only goes off if it's supposed to.
src/cpu/simple/timing.cc:
    some drain changes (kevin's) and some changes to memoryMode assertions so that they don't go off when they're not supposed to.

--HG--
extra : convert_revision : 007d8610f097e08f01367b905ada49f93cf37ca3