Remove obsolete net/sixxs-heartbeatd.  Please use net/sixxs-aiccu instead.

PR:             112443
Submitted by:   Craig Butler <craig001@lerwick.hopto.org>

Remove the FreeBSD KEYWORD from all rc.d scripts where it appears.
We have not checked for this KEYWORD for a long time now, so this
is a complete noop, and thus no PORTREVISION bump. Removing it at
this point is mostly for pedantic reasons, and partly to avoid
perpetuating this anachronism by copy and paste to future scripts.

SHA256ify

Approved by: krion@

The return value of getaddrinfo(3) was only checked for negative
values but on FreeBSD it can also return positive values to indicate
a problem.

PR:             70242
Submitted by:   Meno Abels <meno.abels@adviser.com>

FreeBSD 5.1 and later use NetBSD-style ifconfig(8) to set up a
gif(4) tunnel, earlier versions use gifconfig(8).  Make the example
file match the OS version.

Import SixXS heartbeat 2003-10-26.

This is the heartbeat client for the public dynamic-IPv4
IPv6 tunnel beta test from the SixXS tunnel service provider.