Revert "Revert "x86/x86-64: Avoid temporary for read barrier field load.""

Fixed the fault handler recognizing the TEST instruction and
fault address within the lock word. Added tests to 439-npe.

Bug: 29966877
Bug: 12687968
Test: Tested with ART_USE_READ_BARRIER=true on host.
Test: Tested with ART_USE_READ_BARRIER=true ART_HEAP_POISONING=true on host.

This reverts commit ccf15bca330f9a23337b1a4b5850f7fcc6c1bf15.

Change-Id: I8990def5f719c9205bf6e5fdba32027fa82bec50
19 files changed