Add update option to dexdump test runner

Test: art/test/dexdump/run-all-tests --update
Test: art/test/dexdump/run-all-tests --help
Test: art/test/dexdump/run-all-tests
Change-Id: Ia6d1eee2da274573702b560e6c9c21aaf926f892
1 file changed