tree 45ea351d11d26a7881441b1451d77f5cfef37ebb
parent 3454ade92db48236057814f0ade5fa45bd57cd62
author bigbiff <bigbiff@teamw.in> 1421531592 -0500
committer Dees Troy <dees_troy@teamw.in> 1422367639 +0100

Add cancel backup capability.

This will stop the iteration of the partition objects, kill the
current twrpTar thread and remove the backup directory.

Implement TWAtomicInt class to give us a wrapper that automatically
uses mutexes before the read and write to help ensure that the
reads and writes will be atomic based on documentation.

Change-Id: I645b22bc980a292e9c7202acb24ffd22ebe68c63