+++ This bug was initially created as a clone of Bug #640247 +++

Description of problem:
When Help -> About is clicked in the grahphiz graph viewer (dot -Tgkt; its window is called DocEdit), a window pops up with the following information:

<unknown> 0.1
Visualize and edit graphs of nodes and edges
....

'About <unknown>' is also displayed in the window title.

Version-Release number of selected component (if applicable):
graphviz-2.26.0-4.el6

How reproducible:
Always

Steps to Reproduce:
1. yum install graphvhiz{,-graphs}
2. dot -Tgtk /usr/share/graphviz/graphs/directed/tree.gv
3. Click Help -> About
  
Actual results:
The program doesn't know its name. :)

Expected results:
I'm not really sure what the name of the program is, but something particular  should be used.