[merge] different return code for internal errors

[Martin Pool]

On 8/16/07, Martin Pool <mbp at sourcefrog.net> wrote:
> With this in place there are in fact a few tests that fail, probably
> because they are getting an error that wasn't the one they expected.

There are about 57 failures.  Most of them seem to be blackbox tests
that are getting uncaught Unicode errors.  I think that shows adding
this is a good idea, because we do want to avoid showing people a
traceback where we could give a better error.  It might take a while
to fix them all up so I'm not going to do it right now, but I did want
to at least see if this would catch anything.  If anyone else would
like to try that would be great.

-- 
Martin