matplotlib Code

Add support for fonts with more than 256 codepoints in PDF backend.
This currently only works when pdf.fonttype == 42. (It doesn't seem
possible to have a CID-keyed Type 3 font in PDF, so some hacky
solution will have to be developed.)

Improve font manager so default font names like "serif", "sans-serif"
etc. are looked for across all fonts in that mapping, not just a
single hard-coded one.
Add DejaVu fonts as an alternative to Vera fonts if present.
Fix how mathtext non-Computer Modern fonts are specified.

Fix bug with SVG non-math text

Fix bug with PDF non-math text

Improve font rendering considerably using a vertical hinting hack.
Hinting is disabled for all of the "vector" backends, to correct
spacing problems.

Fix character spacing bug in non-mathtext

typo in the tcl/tk win32 includes

Expose Unicode font functionality for mathtext through rcParams

Removed mathtext2. Fix horizontal centering in mathtext. Put all
mathtext_examples on one plot.

Fix bug when rendering special XML characters (such as < > &) in SVG