dvdauthor : new package

dvdauthor : new package

DVDAuthor is a set of tools to help you author the file and directory
structure of a DVD-Video disc, including programmatic commands for
implementing interactive behaviour. It is driven by command lines and
XML control files, though there are other programs that provide
GUI-based front ends if you prefer

[Thomas:
 - Make the libdvdread dependency optional: it is only needed for the
   dvdunauthor program, which can be disabled using a configure
   option. So a separate Config.in option was added for dvdunauthor.
 - Adjust license to GPLv2+, as can be seen in the source code itself.
 - Add optional dependency on fontconfig and imagemagick. Make sure we
   don't pick up a host installed GraphicsMagick (which is different
   from ImageMagick!)
 - Add a hash file.]

Signed-off-by Stephen M. Kenton <skenton@ou.edu>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>