RFR 8140274: methodHandles and constantPoolHandles should be passed as const references

[Coleen Phillimore]

Summary: modified code to use const reference parameters

open webrev at http://cr.openjdk.java.net/~coleenp/8140274.01/
bug link https://bugs.openjdk.java.net/browse/JDK-8140274.01

A test of tolerance for tedium!  Best to look at the patch for this 
one.  See bug for how much size it saved in libjvm.so file.

Tested with JPRT, and jtreg tests.

Thanks,
Coleen