whois: Update to version 5.5.18

whois: Update to version 5.5.18

- IPFire-3.x
- Update from version 5.5.15 to 5.5.18
- Changelog
    5.5.18
	Updated the .ga TLD server. (Closes: #1037288)
	Added new recovered IPv4 allocations.
	Removed the delegation of 43.0.0.0/8 to JPNIC.
	Removed 12 new gTLDs which are no longer active.
	Improved the man page source, courtesy of Bjarni Ingi Gislason.
	 (Closes: #1040613)
	Added the .edu.za SLD server.
	Updated the .alt.za SLD server.
	Added the -ru and -su NIC handles servers.
    5.5.17
	Added the .cd TLD server.
	Updated the -kg NIC handles server name.
	Removed 2 new gTLDs which are no longer active.
    5.5.16
	Add bash completion support, courtesy of Ville Skyttä.
	Updated the .tr TLD server.
	Removed support for -metu NIC handles.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>