[DejaVu-fonts] longs

[James C. <cl...@jh...>]

Here is a patch adding the longs char (ſ, U+017F) as requested in the
1.12 note.

Ff didn’t copy over the instructions with the outline (I copied f and
removed the right half of the crossbar) so it is uninstructed.  Some
analysis of f’s instructions should allow their eventual resurection.

I had to edit the diff to remove some UnicodeBmp => Custom encoding
changes.  I’m not sure why they showed up for some of the fonts but
not for all.  I’ve confirmed the edited patch applies.  (Thanks in
part to emacs’ diff mode.)