Updated vtk to vtk 6.1.0
Removed the patches which are no more needed
Snyced the formula with homebrew
Freetype is removed as it is not working
Updated bottles which are build with all the recommended options
Updated ITK 4.5.0 with new bottles (revision 2), linked against VTK 6.1.0.
Put the patch in a gist, and added new patch to build on OS 10.8.5
Synced with homebrew's formula