RFR (XS): 8141677: Improve java.lang.invoke.MemberName hashCode implementation

[John Rose]

Nicely done.  +1
> On Nov 9, 2015, at 6:26 AM, Claes Redestad <claes.redestad at oracle.com> wrote:
> 
> Vladimir,
> 
> I instrumented and counted 7 invocations of MethodName.hashCode during initialization, so I agree the only real concern from a startup point of view is avoiding Byte$ByteCache:
> 
> http://cr.openjdk.java.net/~redestad/8141677/webrev.02/