GDK 2.6, in its doubtless infinite wisdom, has decided that

gdk_font_from_description() will no longer even _try_ to return a
font matching the specified Pango font description; instead it will
return `fixed' no matter what you do. Therefore, I've had to switch
to using Pango proper for Puzzles text rendering, rather than just
using Pango for font selection.

git-svn-id: svn://svn.tartarus.org/sgt/puzzles@5936 cda61777-01e9-0310-a592-d414129be87e