update-sid-file does not update in place

[mcr]

When specifying the path to the sid file, as indicated in the example:

  $ pyang --sid-update-file [email protected]
          [email protected] --sid-extra-range count

you might think you can specify a path, like:

$ pyang --sid-update-file ../some/other/place/[email protected]

and this works for reading, but for writing, pyang always writes

        self.output_file_name = '%s@%s.sid' % (self.module_name, self.module_revision)

(line 276 of sid.py, fn process_sid_file)

whether this is a bug or a feature remains to be seen.