Windows: Protect all Mm and Cc calls with try..except

Windows: Protect all Mm and Cc calls with try..except

Wrap all Memory Manager and Cache Manager operations in a try..except
block to protect against leaking the SectionObjectResource if an exception
is thrown.  Failure to release the SectionObjectResource will result in
subsequent deadlocks.

Change-Id: I92096c1d4bfd5a23069bcc364b68b07327d662ae
Reviewed-on: http://gerrit.openafs.org/10039
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>