matplotlib Code

Remove unnecessary 'import math' from inellipse()

added poly editor

Numpification new try: dont touch numerix/, but make mpl code independent of it.
(Including conversion to "import numpy as npy")
Complete except for pylab.py and mlab.py

reverted numerix breakage, with apologies

converted many non-numpy relicts

fixed a distance bug in arrow

Applied Paul's pick restructure pick contains patch

Numpified patches.py

added polar bar char demo

some polar fixes