mate-1.7.0: use pluma in EXTRAS
mate-document-viewer: require mate-icon-theme

>=mate-icon-theme-1.1.0 is a hard dependecy of mate-document-viewer, the
alternative hicolor-icon-theme is not sufficent and causes configure to
abort
mate-calc: Remove unused autotools inherit
mate-common: remove unused autotools inherit
mate-system-tools: remove unused autotools inherit and fix header
libmatewnck: remove useless blank line
mate-character-map: Remove useless blank line and fix header
pluma: Remove useless blank line
mate-text-editor: Remove useless blank line
mate-file-manager-share: remove trailing whitespace
mate-applets: remove trailing whitespace
fusion-icon: Remove arm keyword as it depends on compiz.
mate: add multilib inherit for $(get_libdir) usage