groff results in empty pngs (pnm* tools not on system)

[Alan Coopersmith]

Dan Nicholson wrote:
> Yeah, I'm pretty sure this is all just fallout from -Thtml. Maybe we
> need to expand the XORG_WITH_GROFF macro to test that -Thtml works and
> export a HAVE_GROFF_HTML conditional. Then you could make the html
> targets in libX11/specs/troffrules.in conditional on that.

Or we just finish doclifting everything to docbook, though the libX11/specs
are gigantic...

-- 
	-Alan Coopersmith-        alan.coopersmith at oracle.com
	 Oracle Solaris Platform Engineering: X Window System