fontconfig: add .fonts.conf

FINALLY FOUND A FIX FOR THIS. Some Linux apps such as Firefox
don't relay on default system configuration for font smoothing.
I don't like smooth font rendering at all, you can laugh at me
as much as you want but I just can't handle it.

This .fonts.conf file sets hinting enabled but sets hinting to
hintfull, that makes the font don't appear "smooth" (I prefer
the term blurry, though).

I still need a way for set text hinting to full in my other apps.
XFCE and GNOME made this job easy because there was an option
at the control panel for changing font rendering settings, but
Openbox lacks at that. My current distro is supposed to have
installed lxappearance, but it seems that "Font" tab is disabled
and I can't change the way my fonts are rendered system-wide
excepting some apps such as Firefox, Iceweasel or VLC.