[Fontconfig] blacklisting doesn't work

[Patrick Lam]

Keith Packard wrote:

> It doesn't matter -- each global cache entry has a private timestamp
> which is compared only against the font file timestamp. The directories
> which aren't in the per-dir cache system are *always scanned* and
> compared with global cache entries.

Hmm.  I may have falsified that; see line 139 of fcdir.c.  You used to
call FcGlobalCacheScanDir, but that doesn't exist anymore.  Perhaps it
should.

pat