matplotlib Code

updates to the users guide

updated users_guide.tex to mention numpy, qtagg backend,
new location of matplotlibrc files, and changes to the
process (numerix does not have to be selected at build
time, etc).

Use pslatex package for nice adobe fonts, use bookmarks
and colorlinks options for the hyperref package.

Removed figures from version control which are created
when make is run.

syncing to 0.71

partial spell check and minor fixes

sync to 0.70

ported to pylab

added ps guide

fixed make and readme

added a webapp demo

fixed Jochen and Andrews bugs