message: COMP: Prevent RTK from overwriting CMAKE_MODULE_PATH
  The existing behavior was erasing foo from CMAKE_MODULE_PATH while
  find_package(ITK) was executed:
  set(CMAKE_MODULE_PATH foo)
  find_package(ITK)
  This is because ITKConfig.cmake eventually called
  lib/cmake/Modules/RTK.cmake that had CMAKE_MODULE_PATH already expanded
  when ITK was built.
diff: @@ -207,7 +207,7 @@ set(RTK_VERSION_PATCH ${RTK_VERSION_PATCH})
  set(RTK_USE_CUDA ${RTK_USE_CUDA})
  if(${RTK_USE_CUDA})
  - set(CMAKE_MODULE_PATH ${RTK_MODULE_PATH_CONFIG} ${CMAKE_MODULE_PATH})
  + list(APPEND CMAKE_MODULE_PATH ${RTK_MODULE_PATH_CONFIG})
  # if we are using CUDA, make sure CUDA libraries are available
  find_package(CUDA_wrap REQUIRED)
  include_directories(${CUDA_INCLUDE_DIRS})
  