RFR 8171173: EXCEPTION_ACCESS_VIOLATION running VirtualObjectDebugInfoTest.java

[Tom Rodriguez]

http://cr.openjdk.java.net/~never/8171173/webrev
https://bugs.openjdk.java.net/browse/JDK-8171173

This is actually a test bug where some oops were being left out of the oopmap.  In a normal compiler this would be handled automatically but since these tests are constructed manually we have to ensure that any values that appear in the debug info also appear in the oopmap.  Tested by inspection of the resulting oop map.

tom