message: FIX: KWStyle can be external
diff: @@ -161,8 +161,9 @@ list(APPEND RTK_INCLUDE_DIRS
  # --------------------------------------------------------
  # Setup KWStyle from ITK
  if(ITK_USE_KWSTYLE)
  - set( KWStyle_DIR ${CMAKE_BINARY_DIR}/KWStyle-build )
  - set( KWSTYLE_EXECUTABLE ${KWStyle_DIR}/KWStyle)
  + if(NOT EXISTS KWSTYLE_EXECUTABLE )
  + set( KWSTYLE_EXECUTABLE ${CMAKE_BINARY_DIR}/KWStyle-build/KWStyle)
  + endif()
  set(WORKING_DIR "")
  if(ITK_SOURCE_DIR)
  