uncrypt needs to be triggered to prepare the OTA package before
rebooting into the recovery. Separate uncrypt into two modes. In
mode 1, it uncrypts the OTA package, but will not reboot the
device. In mode 2, it wipes the /misc partition and reboots.
Needs matching changes in frameworks/base, system/core and
external/sepolicy to work properly.
Bug: 20012567
Bug: 20949086
Change-Id: I14d25cb62770dd405cb56824d05d649c3a94f315
Also apply some trivial changes like int -> bool and clean-ups.
Change-Id: I5c6c42d34965305c394f4f2de78487bd1174992a
(cherry picked from commit 381f455cac)
