* Replace mutt with mutt-kz
* Update the build to the latest standards

	renamed:    network/mutt/mutt-1.5.21-config.patch.xz -> network/mutt-kz/mutt-kz-20130515-config.patch.xz
	new file:   network/mutt-kz/mutt.build
	deleted:    network/mutt/mutt-1.5.21-sidebar.patch.xz
	deleted:    network/mutt/mutt-1.5.21-slackware.patch.xz
	deleted:    network/mutt/mutt.build