added Mavericks font fix patch

Is it possible to include this extra patch? I have a QT dependency for running [spyder], a python IDE, which can not run properly without this patch. I've documented the issue over at the [spyder issue tracker].

This patch deals specifically with the [issue of font names under OS X Mavericks]. Spyder does not crash on this issue, the editor just becomes extremely slow (probably due to constantly printing this error).

Some background: I'm not a QT, nor ruby developer. I'm a (scientific) python developer that relies heavily on this spyder IDE, so I really needed this specific fix. Sorry if this patch is not really up to standards.

[spyder]: http://code.google.com/p/spyderlib/
[spyder issue tracker]: http://code.google.com/p/spyderlib/issues/detail?id=1623
[issue of font names under OS X Mavericks]: https://bugreports.qt-project.org/browse/QTBUG-32789