[gnulib-tool-py] --megatest severe bug

[Stefano Lattarini]

If I issue:

    $ python ./gnulib-tool.py --megatest y0

I get the following error:

    Traceback (most recent call last):
      File "./gnulib-tool.py", line 924, in <module>
        main()
      File "./gnulib-tool.py", line 719, in main
        testdir.execute()
      File "~/src/gnulib-python/pygnulib/GLTestDir.py", line 959, in execute
        if auxdir != '.':
    NameError: global name 'auxdir' is not defined

I've not investigated the issue any further.

Regards,
  Stefano