- Update to 0.4.0
  - New options:
    -C option to change the default reject code
    -S option to specify a path to sendmail (for the -x option)
    -R option to specify the rejection message
    -a option to skip messages that were authenticated
  - IPv6 address support
  - Syntax clean-ups
- Drop upstreamed syntax, rejection text and IPv6 patches
- Update authuser patch: note that upstream has introduced a -a option that
  does pretty much the same as the -I option added by this patch, so this
  patch is deprecated and will not be included in builds for Fedora 22 onwards
- Clean up other patches to apply cleanly