xfce4-session: Added systemd support patch.

Enable systemd support for shutdown and reboot.
Merge pull request #21 from cavalier38/xfce4-session

xfce4-session: Added systemd support patch.
xfce4-datetime-plugin: version bumped to 0.6.2.
Merge pull request #22 from Florin65/master

xfce4-datetime-plugin: version bumped to 0.6.2.
xfce4-weather-plugin: version bumped to 0.8.3.
Merge pull request #23 from Florin65/master

 xfce4-weather-plugin: version bumped to 0.8.3.
xfce4-timer-plugin: version bumped to 1.0.0.
orage: version bumped to 4.8.4.
Merge pull request #24 from Florin65/master

 xfce4-timer-plugin: version bumped to 1.0.0.
libwnck: add it from gnome repo.
Merge pull request #25 from Florin65/new

libwnck: add it from gnome repo.
parole: version bumped to 0.5.0.
xfce4-eyes-plugin: version bumped to 4.4.2.
xfdesktop: version bumped to 4.10.2.
Merge pull request #27 from Florin65/p3

xfdesktop: version bumped to 4.10.2.
Merge pull request #28 from Florin65/p2

xfce4-eyes-plugin: version bumped to 4.4.2.
Merge pull request #29 from Florin65/p1

parole: version bumped to 0.5.0.
xfce4-notifyd: version bumped to 0.2.3.
Merge pull request #30 from Florin65/master

xfce4-notifyd: version bumped to 0.2.3.
xfce4-notifyd: version bumped to 0.2.4.