[HACKERS] pg_restore is broken on 9.2 version.

Hi All,

Commit c59a1a89035674c6efacc596d652528cebba37ec don't allow non-positive number
of jobs. Now on 9.2 number of jobs get assigned to opts->number_of_jobs. If
user don't specify any value -j then default value will be always 0. Which will
lead to the "invalid number of parallel jobs" error.

    if (opts->number_of_jobs <= 0)
    {
        fprintf(stderr, _("%s: invalid number of parallel jobs\n"), progname);
        exit(1);
    }