Code review and main tree inclusion for java-mvn-src.eclass and java-pkg-simple.eclass

Hi everyone,

I would like to commit a package to the main tree whose dependencies
include the freehep-* libraries from the java-experimental overlay.
Those in turn depend on java-mvn-src.eclass, which depends on
java-pkg-simple.eclass, both written by mvg.

So, I'd like to have these committed to the main tree, which means we
need a code review. Please see here:

http://overlays.gentoo.org/proj/java/browser/java-experimental/eclass

... and let's say after 30 days from this email pending resolution of
any complaints mvg and I will push these to main tree.

-ak