Fixed bug in rf_algorithm (missing headers)
Merge branch 'master' of github.com:DerThorsten/vigra into thorsten_master
Added function to create edge weights from an interpolated image.
Added ragFindEdges.
Removed unnecessary code.
Merge branch 'master' of github.com:DerThorsten/vigra into thorsten_master
Fixed small bug in edgeWeightsFromInterpolatedImage.
Added eccentricitytransform.hxx.

Removed unnecessary code from graph_algorithms.hxx.