Test mode: Add /var/db/fontconfig to the exclusion list
Test mode: Add /var/db/fontconfig to the exclusion list

Poudriere ignores this directory too.  fontconfig just doesn't
clean after itself properly.  Also the same issue that is affecting
the gnatdroid-sysroot ports seems to be affecting x11-fonts/fontconfig
where "@dir" keyword is basically ignored and the directory remains
intact, but empty.

jrmarino/synth,jrmarino/synth,jrmarino/synth,jrmarino/synth