Minor speedup in mathtext parsing.
Clarify comment.
Use numpy for math.
added gtktools and exceltools to toolkits
make figure smaller so it fits onscreen
moved optional rec2* packages out of mlab and into toolkits
fix 'your matplotlib is too old' error message
Updated to numpy names.
Somehow this fix didn't get merged from trunk... (Saving gzipped Svg files)
Save images to Svg files without writing the image data out as a temporary file.
