Port gvedit to Qt5
Distributions are weeding out Qt4 dependencies everywhere, and there seems to be a graphviz-port-to-qt5 patch floating around at least on linuxfromscratch.org:
http://www.linuxfromscratch.org/patches/blfs/svn/graphviz-2.40.1-qt5-1.patch
Would you consider adding this upstream?