re-packs the tar file using the Python tarfile standard library module to
give it good permissions.
+First, install this fixtar package into the Python you use to build source
+Then you have to make the fixtar command known to setup.py. There are a few
+ways to do this. One is to use "from ez_setup import use_setuptools".
+Another is to update the project's setup.py:
+ # For building on Windows, need to fix the tar file after it's made.
+ # Install https://bitbucket.org/ned/fixtar, then this will work.
+ from setuptools_fixtar import fixtar
+ 'fixtar': fixtar.FixtarCommand,
+Finally, invoke it like this:
python setup.py sdist --keep-temp --formats=gztar fixtar -oned -gfixtar --clean