install CTK's *.cmake files

This patch installs CTK's *.cmake files (on my system into /usr/lib/ctk-0.1/CMake)

This patch also installs the following files into the same location:
    ${CTK_CMAKE_DIR}/ctkMacroWrapPythonQtModuleInit.cpp.in 
    Libs/ctkExport.h.in

Is there a better place?

All the files *.cmake/*in are needed for example by Slicer. 

Please review/change/apply this patch.