matplotlib Code

Add some TODO's and remove some debug code.

Fix some issues with saving movies from FuncAnimation. The initialization draw was putting data in the saved sequence, which needed to be removed. Also, handle the case where there is no saved sequence. Make sure to disconnect signals for first draw, otherwise saving the movie will start the animation.

backend_qt4: don't make app if ipython already made it; patch by Brian Granger

Hide old animation examples under the animation/ subdir.

Add another set of basic examples.

Update examples to use proper imports.

Add previous animation examples ported to new framework, as well as a few new ones.

Move previous animation examples to make room for new ones.

Add new animation framework.

Fix small bug where module names were being incorrectly lowercased in
backend specifications.

Thanks to Evan Patterson and Brian Granger for spotting the problem
and fix.