Request for reviews (XL): 6655646: dynamic languages need dynamically linked call sites

[John Rose]

Here is the second-largest piece, the implementation of invokedynamic.

   http://cr.openjdk.java.net/~jrose/6655646/webrev.00

Note that the compilers do not handle the instruction, in this version  
of the code.  That will be a separate bug fix.

-- John