matplotlib Code

reverted numerix breakage, with apologies

minimized remaining numerix wrapper code

recleanup of axes imports

don't require setuptools by default.

Cleaned up setup.py. Removed references to Python 2.2, distutils.

The matplotlib._isnan module removed (use numpy.isnan)

revert r3512, which broke on Mac

finished numpification of extension code and axes.py

Removed our own MPL_isnan.h in favor of numpy's implementation

Add TTF subsetting to backend_pdf.py.