- Fixed linking errors of blender player with CMake and XDND enabled

- Rest of changes to make XDND switch-off-able: link against extern_xdnd only
  if XDND is enabled

source/creator/CMakeLists.txt

@@ -829,7 +829,6 @@ endif()
 		extern_minilzo
 		extern_lzma
 		extern_colamd
-		extern_xdnd
 		ge_logic_ketsji
 		extern_recastnavigation
 		ge_phys_common
@@ -893,6 +892,10 @@ endif()
 		list(APPEND BLENDER_SORTED_LIBS extern_carve)
 	endif()
 
+	if(WITH_GHOST_XDND)
+		list(APPEND BLENDER_SORTED_LIBS extern_xdnd)
+	endif()
+
 	foreach(SORTLIB ${BLENDER_SORTED_LIBS})
 		set(REMLIB ${SORTLIB})
 		foreach(SEARCHLIB ${BLENDER_LINK_LIBS})