First cut: java.lang.module, org.openjdk.jigsaw, jmod

[Mark Reinhold]

I've just pushed a rough first cut of the above-named components.

Javadoc (nearly comment-free at the moment, I'm afraid) is available
here:

    http://cr.openjdk.java.net/~mr/jigsaw/api

"jmod" is the command-line tool for manipulating module libraries.
At the moment it can install modules, directly from a javac classes
directory, and also list the modules in a library.  See the unit
tests in test/org/openjdk/jigsaw/cli for examples.

I've integrated jopt-simple [1] for use in jmod as well as any other
command-line tools we build.  (Thanks to Paul Holser for writing such
a clean, compact command-line parsing library!)

- Mark


[1] http://jopt-simple.sourceforge.net/