Summary:
- From http://hg.openjdk.java.net/mlvm/mlvm/jdk/file/93a6c619b0ca/coro-simple.patch
- Add 'EnableCoroutine' option to test/java/dyn/CoroutineTest.java

Test Plan: test/java/dyn/CoroutineTest.java jtreg test

Reviewed-by: yuleil, shiyuexw, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/113