ART/Mterp: eliminate unnecessary access checks

This CL switches mterp from using the old quick entrypoints
for sget/sput to instead using an sget/sput access sequence
similar to that used by the reference interpreter.  This
results in a reduction of unnecessary access checks.

Benchmarks: 3% improvement on DeltaBlue

Bug: 30933338
Test: ART_TEST_INTERPRETER=true m test-art-host
Change-Id: Ib4e64d72b511c6a9ed537289bfeb393eff42c70f