Bumped mate-panel to 1.9.4.
Bumped mate-marco to 1.9.3.
Bumped mate-system.monitor to 1.9.1.
Bumped mate-session-manager to 1.9.3.
Bumped mate-sensors-applet to 1.9.0.
Bumped mate-libmatemixer to 1.9.2.
Bumped mate-media to 1.9.2.