use 64-bits usage bits almost everywhere

this part fixes crashes due to how JNI uses variadic calls, so
changing the return type of some methods will corrupt the stack 
silently on those calls

Test: built, manual, cts as in b/38466700
Bug: 38466700
Bug: 33350696

Change-Id: I0e11cf0bb2fde2cf3a787e672c00d2dc0ccfb501