Log Message:
Update to libXfont-1.3.0:
- Introduce catalogue FPE, which contains symlinks to font directories.
  Options like unscaled can be attached to it. Fix a bug in this code.
- Remove lots of dead code and cleanup some warnings.

Note: the second point does change the ABI, but as the code seems to have
been unused, I'm not forcing a major bump that upstream didn't do.