[XForms] TrueType font support version

[Jens Thoms Toerring]

Hi,

   I just got a version with support for True Type fonts to
compile - and it also seems to run. So if you feel advente-
rous download the 'ttf' branch from the git repository and
give it a try;-) This version will automatically enable the
new feature, but you can switch it off by passing the op-
tion '--disable-xft' to the ./configure script - with that
it should (more or less) build to the old version.

The default fonts I've picked are, as Todd Denniston suggested,
'DejaVu Sans', 'DejaVu Sans Mono', 'DejaVu Serif' and 'Century
Schoolbook L'. I hope they're available everywhere (or will
automatically get replaced by something the Xft library thinks
is similar). That's, of course, no final decision.

Don't expect everyting to work flawlessly, this is still work
in progress!
                          Best regards, Jens
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