Message3967

I must confess that I was a little perplexed by the change myself,
especially when you look at the wrap() code

    public static PyFile wrap(InputStream is, int bufsize) {
        return new PyFile(is, bufsize);
    }

    public static PyFile wrap(InputStream is) {
        return wrap(is, -1);
    }

This could have been dealt with by adding extra constructors for
PyFile(InputStream) with defaults for the bufsize parameter.