RFR (S) 8181170: resolved_references array leaks for RedefineClasses

[coleen.phillimore at oracle.com]

Summary: clear out resolved_reference from ClassLoaderData::_handles

See the bug for details.

open webrev at http://cr.openjdk.java.net/~coleenp/8181170.01/webrev
bug link https://bugs.openjdk.java.net/browse/JDK-8181170

Tested with:
tier1 hotspot (includes most hotspot jtreg tests)
tonga nsk.jvmti, nsk.jdi (internal tests)
jdk/test/java/lang/instrument
jdk/test/com/sun/jdi

Thanks,
Coleen