Change some mercurial docs to git docs in the faq (#21)
Change some mercurial docs to git docs in the faq (#21)

This is an initial draft of moving the faq to git commands.
jeff5/jython-devguide,jeff5/jython-devguide,jython/devguide,jeff5/jython-devguide,jython/devguide,ezio-melotti/devguide,jython/devguide