Deprecate fltk graphics toolkit?

[John W. Eaton]

As I understand it, there are some issues with starting Qt graphics when 
running in non-gui mode, and that the fltk graphics toolkit does not 
have those problems.  But if we could fix that, and make the Qt plot 
window work when running in --no-gui mode, could we deprecate the fltk 
graphics toolkit?

It seems wasteful to have to maintain both Qt and fltk graphics.  For 
example, I just made a change for the "Save" and "Save As" menu items in 
the Qt graphics code.  This change took much longer than it should have 
when I remembered that the change would also need to be made in the fltk 
graphics code and that needed to be done in a completely different way.

Comments?

jwe