Bug 532194 - Added permission evaluation cache to increase performance

Increases performance when using many bundles and permission rows. Also
removes slow down as more bundles/rows are added to the system.

Change-Id: I31f2ee701654dc9e7d1598570bd04241126cd4da
Signed-off-by: Scott Tustison <scott.tustison@gmail.com>
5 files changed