Add a `jit-on-first-use` "compiler" option to ART's testrunner script.

This can be used to filter tests in test/knownfailures.json.

Test: art/test/testrunner/testrunner.py --jit-on-first-use
Bug: 62611253
Change-Id: Ie45ee10b794dc9f0749ef8fb0d174cc38653c6ba
2 files changed