Add a method to set up /proc/cpuinfo with enough privileges. Set
up the environment for an app in InitializeNativeBridge().
Turn on -Wall for libnativebridge.
Change-Id: I0b93da93251c6b4638de786bf98cf99df07c3fc2
Do not allow arbitrary paths for the native bridge - only allow
simple names.
Do not allow re-setup of the native bridge.
Bug: 16404669
(cherry picked from commit cd2ef4c1af)
Change-Id: Ie22de356d2307fe2758f9094a85d44e61a4098a1