COMP: Fix CTKConfig.cmake to properly set _{LIBRARY,INCLUDE}_DIRS variable

For example, within CTKConfig.cmake:

* Before this commit:

[...]
set(CTKVisualizationVTKCore_LIBRARY_DIRS "VTK_LIBRARY_DIRS;/path/to/VTK-build/bin")
[...]

set(CTKVisualizationVTKWidgets_INCLUDE_DIRS
  [...]
  "/path/to/CTK-build/Libs/Core;"
  "/path/to/CTK/Libs/Visualization/VTK/Core;
  "/path/to/CTK-build/CTK-build/Libs/Visualization/VTK/Core;"
  "VTK_INCLUDE_DIRS;"
  "/path/to/VTK-build;"
  "/path/to/VTK-build/Common;"
  [...]
  )

* After this commit:

[...]
set(CTKVisualizationVTKCore_LIBRARY_DIRS "/path/to/VTK-build/bin")
[...]

set(CTKVisualizationVTKWidgets_INCLUDE_DIRS
  [...]
  "/path/to/CTK-build/Libs/Core;"
  "/path/to/CTK/Libs/Visualization/VTK/Core;
  "/path/to/CTK-build/CTK-build/Libs/Visualization/VTK/Core;"
  "/path/to/VTK-build;"
  "/path/to/VTK-build/Common;"
  [...]
  )

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22434 3bd1e089-480b-0410-8dfb-8563597acbee