Summary: Ensure the thread is in correct state; rewrote test in Java
Reviewed-by: kvn, twisti

Summary: Removed part of the test that required the VM to start up with -XX:ReservedCodeCacheSize=2048m
Reviewed-by: kvn, rbackman

Summary: Limit the size of the code cache to at most 2G when arguments are checked; added regression test
Reviewed-by: kvn, twisti