add fonts.scale and fonts.dir files for `xset +fp`

The fonts.scale files were generated by running `mkfontscale ./**/` and
the fonts.dir files were generated by running `mkfontdir ./**/` in this
Git repository's working tree.  Run those commands again to regenerate.

These generated files let you register their corresponding True Type
fonts with the `xset +fp` command, which "installs" them under Linux.