RFR(S): 8240676: Meet not symmetric failure when running lucene on jdk8

[Roland Westrelin]

> I would prefer to have DEBUG_ONLY() field in Compile class to current implementation where a passed parameter is used 
> only in debug build. Use something like DEBUG_ONLY( VerificationMark vm;) around calls where it should be set/reset.

What about this?

http://cr.openjdk.java.net/~roland/8240676/webrev.02/

Roland.