matplotlib Code

Fix some minor typos in the paths tutorial

Fix some minor typos in the transforms tutorial

Fix some minor typos in the transforms tutorial

added looking glass demo

added path tut

Remove unmasked_index_ranges from lines.py; it is still in cbook.py

Add docstring.py; I forgot to add it when committing the Coombs patch

Small changes to bar kwarg handling in response to 1200213

pyplot tracks current image at the figure and axes level;
fixes ticket 1656374

get_sample_data improvements: remove old files from subdirectories and
not only the top-level directory; try to handle the disconnected use case;
use the perhaps more stable svnroot URL instead of the viewvc one