fonts cache initialized on each invocation of Lucide

[joachim@…]

It seems that the fontscache is initialized each time Lucide is invoked. This also overwrites the fontscache that may have been generated by other programs like The Gimp installer.

This is bad for two reasons:

1) performance (!) 2) Lucide drops fonts that The Gimp did add (for example from other fontdirectories)

This has been reproduced on two systems.

[Robert]

I did see the same on my system. I deleted once the files ".fonts.cache-1" and "fonts.conf" in my "home" directory. They get recreated on the next Lucide PDF loading and this fixes the problem for me.

[Eugene Romanenko]

(In [58]) save fonts information in cache file to avoid rescan (closes #30, #32, #35)