Let CMake picks correct VTK, follow-up of issue151
https://bitbucket.org/fenics-project/dolfin/issue/151
Applies to DOLFIN 1.3.0, not applicable to 1.3.0+.
Added fix to cmake.package. Added "rm -f Source/cmConfigure.h" so configuration and compilation works with dirty build dir.
Merged in blechta/dorsal/fix-vtk-linking (pull request #3)

Let CMake picks correct VTK, follow-up of issue151
Merged in poconbhui/dorsal (pull request #4)

Added fix to cmake.package.