arp-scan-1.9-3.1

- Cleanup spec file with spec-cleaner
- Adjust dependencies

- arp-scan-avoid-crash.patch: avoid crash when trying capture as
  user (bsc#978596)

- Update project and download url

- Update licensing information

- Update to 1.9
- Cleanup spec file with spec-cleaner
- Update project url
- Use url for source

- update to 1.8:
  * the IEEE OUI and IAB files were updated
  * support was added for trailer ARP replies
  * support for LLC/SNAP packets with the 802.1Q tag was added
  * full help output is no longer displayed for usage errors
  * the license was changed from GPL v2 to v3
  * a DoS warning was added to the manpage and help output
  * new arp fingerprints were added
  * gcc compiler security options were enabled
  * the Perl scripts were modified to work on systems where the perl executable
    is not in /usr/bin
  * various minor bugfixes and improvements were made

- Initial RPM