RFR 8167372: Add code to check for getting oops while thread is in native

[harold seigel]

Hi,

Please review this JDK-10 enhancement for bug JDK-8167372.  As described 
in the bug, this fix helps check for naked oops.  The fix was tested 
with JCK lang and VM tests, JTReg hotspot and many JTReg JDK tests, M5 
tier1 - tier5 tests, and JPRT.

Open Webrev: 
http://cr.openjdk.java.net/~hseigel/bug_8167372/webrev/index.html

JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8167372

Thanks, Harold