Pull font.have_font(name)

[anatoly techtonik]

I've implemented font.have_font() for Windows and exposed it as top function in font module (with tests). The last commit is here:

http://code.google.com/r/techtonik-pyglet-12/source/detail?r=8cca88b20854040d828cae96cf7d69d2415880eb#

On Windows this function always returned True meaning that font.load(['Terminus', 'Lucida Console', 'monospace']) will always return Arial or whatever default font it has, which is not monospace in any case.

I'll be grateful if anybody with write access could pull that.