[development] Files directory on installation usability fix not quite usable. ; )

[DragonWize]

Why not just require write permission just as we require write
permission of settings.php (unless you do it manually). Then use the
install script to write a files directory. That way there is not a
file directory in the distro and won't cause any problems with copying
files over for upgrades.

-- 
Alan Doucette
Koi Technology, LLC
www.KoiTech.net