2008-10-22 Alpar Juttner Merge
2008-10-18 Peter Kovacs Fixes and improvements related to GridGraph
2008-10-20 Balazs Dezso Improvement on grid graphs
2008-09-02 Peter Kovacs Port grid graph structure from SVN 3503 (ticket #57)
2008-10-22 Alpar Juttner Merge
2008-10-22 Alpar Juttner Merge
2008-10-22 Alpar Juttner Merge