message: change to RULEDIR from GENDIR
diff: @@ -4,7 +4,7 @@ genrule(
  srcs = [
  "//bark/python_wrapper:core.so",
  ],
  - cmd = (" mv $(GENDIR)/bark/python_wrapper/core.so $(location core.so)") ,
  + cmd = (" mv $(RULEDIR)/python_wrapper/core.so $(location core.so)") ,
  #]),
  outs = [
  "core.so",
  