PKG: cmake flag to say we want to make xdk

SuperBuild/CMake/GenerateXDK.cmake

@@ -36,9 +36,6 @@ file(WRITE "${CMAKE_BINARY_DIR}/GENERATE-XDK/src/GENERATE-XDK/CMakeLists.txt"
        include(CMakeParseArguments)
        set(CMAKE_INSTALL_PREFIX \"${SB_INSTALL_PREFIX}\")
        set(DOWNLOAD_LOCATION \"${DOWNLOAD_LOCATION}\")
-       set(SETUP_SCRIPT_SRC ${CMAKE_SOURCE_DIR}/CMake/pkgsetup.in)
-       set(WITH_OTBGUI OFF)
-       set(MAKE_XDK ON)
        set(PACKAGE_SUPPORT_FILES_DIR \"${CMAKE_SOURCE_DIR}/Packaging\")
        set(Monteverdi_SOURCE_DIR \"${CMAKE_BINARY_DIR}/MVD/src/MVD\")
        set(Monteverdi_BINARY_DIR \"${CMAKE_BINARY_DIR}/MVD/build\")
@@ -46,6 +43,7 @@ file(WRITE "${CMAKE_BINARY_DIR}/GENERATE-XDK/src/GENERATE-XDK/CMakeLists.txt"
        set(QT_PLUGINS_DIR \"${SB_INSTALL_PREFIX}/plugins\")
        set(QT_TRANSLATIONS_DIR \"${QT_TRANSLATIONS_DIR}\")
        set(ITK_VERSION_STRING \"${ITK_SB_VERSION}\")
+       set(CREATING_XDK ON)
        include(\"${CMAKE_SOURCE_DIR}/CMake/Package_Macro.cmake\")
        include(\"${CMAKE_SOURCE_DIR}/CMake/PackageHelper.cmake\")
        superbuild_package(