mate-text-editor: Update to 1.6.0.
mate-terminal: Update to 1.6.1.
mate-screensaver: Update to 1.6.0.
mate-calc: Update to 1.6.0.
mate-utils: Update to 1.6.0.
mate-system-monitor: Update to 1.6.0.
mate-image-viewer: Update to 1.6.0.
mate-file-archiver: Update to 1.6.0.