RFR ASAP please: 8026365: Fix verifier for anonymous classes

[Karen Kinnear]

Please review quickly:

webrev: http://cr.openjdk.java.net/~acorn/8026365/webrev/
bug: https://bugs.openjdk.java.net/browse/JDK-8026365

Verifier called is_reference_assignable, which called resolve_or_null, which was looking for
the anonymous class in the system dictionary, where it is not. So this will allow more anonymous
class cases to get through the verifier while still doing validity checking (but on the host class only,
not on the anonymous class).

Tested:
Robert's new test: reduct (which he will check in as part of the lambda side of this change)
Lam
Lam1

in progress: vm.quick, java.lang, java.util, Nashorn

thanks,
Karen

p.s. Alejandro, Dan, Calvin - they want this in TL ASAP - should I check this directly into hotspot-master tomorrow?

p.s. Vincente - can you grab this patch to test with Robert's changes please? I tested with the patches he
had given me