RFR 8210422: runtime/modules/ModuleStress/ExportModuleStressTest.java - assertion failed: address not aligned: 0x00000008baadbabe

[coleen.phillimore at oracle.com]

Summary: CLDG_lock caused safepoint in inconsistent state

See bug comments for more details.

open webrev at http://cr.openjdk.java.net/~coleenp/8210422.01/webrev
bug link https://bugs.openjdk.java.net/browse/JDK-8210422

Tested with mach5 hs-tier1-7.  There are good parallel class loading 
tests that test this code.  Unfortunately these tests aren't open yet.

Thanks,
Coleen