Updated to mate 1.5

Hi, I added most of the packages listed on http://pub.mate-desktop.org/releases/1.5/ and updated the dependencies where needed. We may want to mask them until all the bugs are sorted.

It builds fine (exceptions below) and initial testing is looking ok.

New ebuilds:
mate-calc
mate-character-map (replaced gucharmap)
mate-sensors-applet

Missing are the mate-filemanager-* packages which I will add later and send you a pull request when done.

mate-terminal-1.5 fails installing documentation, this is not keyworded but is in the tree.

Let me know if you need any changes done or see any big issues.

Greets
~infirit