matplotlib Code

Added support for extent kwarg without origin kwarg.

cvs suffix is added to version is CVS directory exists.
Releases should be built from a sdist.

Docstring change: note need for origin kwarg with extent kwarg.

Bugfix in new LineCollection code.

Added ability to specify LineCollection offsets as data offsets,
to be applied before any transformation. Added example of this
and other uses of collections.

Make pcolormesh work with numpy.

For usetex, use the gs distiller option by default to avoid embedding issues

Massive cleanup of the usetex code in backend_ps

Noted change to axes.add_collection().

Add autolim kwarg to axes.add_collection; change get_verts()
methods of collections accordingly.