Add java class scan command as a plugin

[licodeli]

Add java class scan command as a plugin, please refer to existing plugins under compiledcode.

Also please refer to the pypi project: python-javatools
https://github.com/obriencj/python-javatools

[licodeli]

python-javatools has the LGPL 3.0 license, we should be careful to use it. Instead, this is a choice: http://web.archive.org/web/20130911180335if_/http://www.jsnp.net/code/javaclass-latest.tar.gz

The license is bsd-new.

[pombredanne]

Moving to plugin repo