6886353: For DeoptimizeALot, JTreg tests should "IgnoreUnrecognizedVMOptions on a product build
Summary: Add IgnoreUnrecognizedVMOptions for JTreg tests (on a product build) to pass with DeoptimizeALot
Reviewed-by: kvn
6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods
Summary: After mechanically merging changes, some by-hand adjustments are needed.
Reviewed-by: ysr