[cp-patches] [FYI] fix build

[Aaron Luchko]

I forgot that although gnu/classpath/jdwp is omitted from the build
vm/reference/gnu/classpath isn't and since I referenced stuff in
gnu/classpath/jdwp from VMFrame the build broke :(

I added vm/reference/standard.omit to omit all the
vm/reference/gnu/classpath/jdwp classes until everything is building.

Aaron

ChangeLog
        * vm/reference/standard.omit: New file to omit jdwp reference
        classes from build.