[Fontconfig] fontconfig 2.1.91

[Keith Packard]

I've tagged 2.1.91, I think the only changes are to the configuration.  
This release should have a working spec file and a different way of 
specifying the set of font directories to be included in fonts.conf.

By default, only X font directories containing outlines are included in 
fonts.conf now; the bitmap fonts are generally more of an annoyance than
a help.  Local sites can add necessary bitmap directories to local.conf.

-keith