matplotlib Code

Clean up multiprocess a little. Remove unused import, ensure Gtk backend is used, and replace pylab with pyplot.

added examples/misc/rasterization_demo.py

Give a more descriptive name (multiprocess.py) to new example

Add an example of an updating plot using (multi)processing. Credit goes to Robert Cimrman.

use 0 for default in rec join outer join if no default given

use 0 for default in rec join outer join if no default given

Fixed a bug in mixed mode renderer that images produced by
an rasterizing backend are placed with incorrect size.

Removal of numerix, stage 2.
The only vestiges are a couple method names, and a validator
with a warning to catch numerix keys in matplotlibrc files.

added group id in Artist. added two svg filter example

removed configobj and enthought.traits