Flush JIT data cache when committing code.

Otherwise, executing compiled code may see old data from
the data cache.

Test: ART_TEST_JIT=true test-art-target on arm/arm64
Test: run-libcore-tests.sh (especially jsr166) on arm/arm64
Change-Id: Id037c68897aa0e9ccacd4c5121f3743fb722c6f3
4 files changed