Update EdgeBase.cs to support new ReversePath property.
Update EdgeBase.cs to support new ReversePath property.

Added support for reversing the geometry.  This is required for animating shapes along a path where the direction needs to be reversed without using the Storyboard.AutoReverse property.
perturbare/GraphX,panthernet/GraphX,edgardozoppi/GraphX,slate56/GraphX,jorgensigvardsson/GraphX,slate56/GraphX