Added icons for Mate, and Cinnamon into /usr/local/share/pixmaps.  Modified icon paths in cinnamon.desktop, and cinnamon2d.desktop.  Renamed mate.desktop to 31Mate.desktop.  Renamed cinnamon.desktop to 31Cinnamon.desktop.  Renamed cinnamon2d.desktop to 32Cinnamon2d.desktop.  Put name and comments under exec settings for .desktop files.