ENH: Update from r70 to r76. Compiles with VTK6 and has a new icon.

r76: http://www.nitrc.org/plugins/scmsvn/viewcvs.php?view=rev&root=fvlight&revision=76
STYLE: Update of icon and screenshots for DTIAtlasFiberAnaylizer Slicer extension

r75: http://www.nitrc.org/plugins/scmsvn/viewcvs.php?view=rev&root=fvlight&revision=75
STYLE: New logo

r74: http://www.nitrc.org/plugins/scmsvn/viewcvs.php?view=rev&root=fvlight&revision=74
ENH: Update VTK6 build to match more closely the way it is done in Slicer.

r73: http://www.nitrc.org/plugins/scmsvn/viewcvs.php?view=rev&root=fvlight&revision=73
COMP:  vtkVersion.h is required for both vtk6 and vtk5

r72: http://www.nitrc.org/plugins/scmsvn/viewcvs.php?view=rev&root=fvlight&revision=72
BUG: Missing files

r71: http://www.nitrc.org/plugins/scmsvn/viewcvs.php?view=rev&root=fvlight&revision=71
ENH: Update Superbuild
ENH: Addition of FindDCMTK.cmake to be able to compile FiberViewerLight using and ITK compiled against DCMTK.