Add new ports games/openclock

PR:		194617
Submitted by:	Kevin Zheng

OpenClonk is a free multiplayer action game in which you control clonks,
small but witty and nimble humanoid beings. The game is mainly about
mining, settling and fast-paced melees.

OpenClonk is not just a game but also a versatile 2D game engine that
allows the creation of mods. It is the successor of the shareware game
series Clonk and thus inherits many of its features.
- fix packaging list for libvirt
- update py-libvirt to 1.2.10
Horde package update:

comms/pear-Horde_ActiveSync 2.19.4 -> 2.20.0
devel/pear-Horde_Core 2.15.0 -> 2.16.0
archivers/pear-Horde_Pack 1.0.4 -> 1.0.5
sysutils/pstree: Fix functionality on DragonFly with USES=alias
databases/p5-DBD-cego: 1.2.8 -> 1.2.9

- Modifications in Cego.xs to support newer releases of DBI

Submitted by:	Björn Lemke <lemke@lemke-it.com>
databases/p5-DBD-cego: fix Makefile
xf86-video-ati: Update to 7.5.0

This update brings several bug fixes. Furthermore, it improves Glamor
support, though this feature isn't supported by FreeBSD yet.

Differential Revision:	https://reviews.freebsd.org/D1106
Tested by:	Many on freebsd-x11@
Reviewed by:	bapt@, kwm@
Approved by:	bapt@
net/miniupnpd: Upgrade version 1.8.20140523 => 1.8.20141022

PR:		193577
Submitted by:	razzfazz (gmail)
Approved by:	maintainer (Tor Halvard Furulund)
net-mgmt/zabbix22*: Upgrade version 2.2.5 => 2.2.7

PR:		193582
Fix by:		timp87 (gmail)
Approved by:	maintainer - pakhom706 (gmail)
Remove duplicate port