for (re-)review (M): 6814659: separable cleanups and subroutines for 6655638

[John Rose]

I refreshed the webrev for the pre-method-handle cleanups,  
incorporating reviewer comments.
   http://cr.openjdk.java.net/~jrose/6814659/webrev.01/
   http://cr.openjdk.java.net/~jrose/6814659/00-to-01.diff.txt

Changes since webrev.00:
- KlassHandles => SystemDictionaryHandles (never)
- RegisterConstant => RegisterOrConstant (never)
- delayed_value => delayed_value_impl, only the virtual overloading  
(jrose)
- update copyright headers to 2009 (twisti)

Also, the index page is reorganized and there are a few more  
explanatory comments here and there.

-- John