We allow png, jpg to channel through already existing tiff2ps (library
libtiff-tools). Other formats can be added if there is a request.
For future reference:
- using pnmtops seem to have issues with landscape/portrait flip, so
tiff2ps seems better alternative.
- using GraphicsMagick won't help because some distros ban postscript
processing directly in its code (e.g. openSUSE)
This patch finishes IM policy ban handling, we can't probably do much
better.
179c0d6ff2