BUG: Mantis-1260: forward PYTHON_INCLUDE_DIR and PYTHON_LIBRARY from SuperBuild to OTB

SuperBuild/CMake/External_otb.cmake

@@ -65,6 +65,11 @@ if(OTB_WRAP_PYTHON OR OTB_WRAP_JAVA)
   ADDTO_DEPENDENCIES_IF_NOT_SYSTEM(OTB SWIG)
 endif()
 
+if(OTB_WRAP_PYTHON)
+  ADD_SUPERBUILD_CMAKE_VAR(OTB PYTHON_INCLUDE_DIR)
+  ADD_SUPERBUILD_CMAKE_VAR(OTB PYTHON_LIBRARY)
+endif()
+
 if(OTB_USE_QT4)
   ADDTO_DEPENDENCIES_IF_NOT_SYSTEM(OTB QT4)
 endif()