RFR (L but tedious) 8183039: Re-examine methodHandle methods uninlined by 8144256

[coleen.phillimore at oracle.com]

Summary: Add more const references so out-of-line methodHandle 
destructor and copy ctor called infrequently

See RFE for more details.   In short, use const methodHandle& when possible.

open webrev at http://cr.openjdk.java.net/~coleenp/8183039.01/webrev
bug link https://bugs.openjdk.java.net/browse/JDK-8183039

Tested with RBT on linux, solaris and windows (still running) with tier2 
testing and all tier1-5 tests on linux x64.

Thanks,
Coleen