Fix the build of gnome-shell-extension-{mediaplayer|open-weather|panel-osd|weather}. While
here remove the dirrm entries of all the gnome-shell-extension-* ports.


git-svn-id: svn://creme-brulee.marcuscom.com/ports/trunk@20013 df743ca5-7f9a-e211-a948-0013205c9059