for review (XXL): 6655638 method handles for invokedynamic

[John Rose]

The file methodHandles.cpp is about 2300 LOC.  I'm open to ideas  
(simple, please) for partitioning it before putback.

One thought is moving the MemberName stuff into its own file; it is  
about 400 LOC, and may grow, especially if it becomes the  
infrastructure of a new MH-based implementation of reflection.

The logic for adapter method handles is at least 400 LOC also.

-- John