Let's merge mkfontdir into mkfontscale

[Alan Coopersmith]

Maintaining a separate repo & set of tarball releases for a 3 line
shell script wrapper around mkfontscale and its man page just doesn't
seem to have been a good use of time for the past 15 years, so let's
stop doing that.

https://gitlab.freedesktop.org/xorg/app/mkfontscale/merge_requests/2

If no one objects by Friday, I'll go ahead and merge this, cut a
mkfontscale 1.2 release, and archive the mkfontdir gitlab project.

-- 
	-Alan Coopersmith-               alan.coopersmith at oracle.com
	 Oracle Solaris Engineering - https://blogs.oracle.com/alanc