message: Allow find luajit 2.1
diff: @@ -8,7 +8,7 @@ SET (LuaJIT_FOUND FALSE)
  SET (LUAJIT_INTERPRETER_TYPE "LuaJIT")
  SET (LUAJIT_LIBRARY_NAME luajit-5.1)
  -SET (LUAJIT_INCLUDE_DIRS /usr/include/luajit-2.0 /usr/local/include/luajit-2.0)
  +SET (LUAJIT_INCLUDE_DIRS /usr/include/luajit-2.0 /usr/include/luajit-2.1 /usr/local/include/luajit-2.0 /usr/local/include/luajit-2.1)
  FIND_PATH (LUAJIT_INCLUDE_DIR lua.h ${LUAJIT_INCLUDE_DIRS} )
  