Revert "4-byte align 64-bit values in Get/Set Double/Long for GCC 4.8."

This reverts commit a47edbad45dda62ddf016cdd2dd3f029e58bc5dc.
Revert "verifier: Bypass monitor-{enter,exit} depth checks"

This reverts commit a3b903780651a4d1f250a0e78dbb0f9ed90ca8e0.