Improve graphical representation of the repository family tree.
Improve graphical representation of the repository family tree.

* tools/client-side/svn-graph.pl
  Output solid blue graph with a white background.  Draw arrows
  between nodes with a consistent line weight.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion