relax SVN archive

The script has been converted into a class called Setup which performs all the actions. All files,
source or otherwise, are now stated as data files to be included in relax.app/Contents/Resources.
All relax modules are specified by the py2app 'includes' option so that they are all included within
the relax.app/Contents/Resources/lib/python2.X/site-packages.zip as *.pyc files. These changes are
needed for the newer versions of the py2app and setuptools Python packages.