[Doxygen-develop] Dot doxfont missing

[Scot W. <sc...@wi...>]

I tried to produce Doxygen graphics in a configuration where "dot" was not on 
the development machine, so the "dot" command redirected the request and files 
to the machine with "dot" installed.

The resulting chart had no labels, because the Doxygen font was not present.

A configuration option to not use doxfont would be nice.  Default fonts are 
better than no labels.  Or allow configuration of the font name.