Re-enable uapi kernel headers for arm.

Bug: 11559337
Change-Id: Ib914e5f22b10d5a74edc357d42b0dcb223185ab4
Add DEXPREOPT support for ART

Change-Id: I24d0d7b2a23a769f5d69bd4dc14be22e1475b759
Merge "Re-enable uapi kernel headers for arm."
Merge "Add DEXPREOPT support for ART"
Merge branch 'master' of https://android.googlesource.com/platform/build