* Update sudo to 1.8.6p8
* Enable PAM support

	new file:   base/sudo/sudo-1.8.6p8-pamd.patch.xz
	renamed:    base/sudo/sudo-1.8.6p7-tmpfiles.patch.xz -> base/sudo/sudo-1.8.6p8-tmpfiles.patch.xz
	modified:   base/sudo/sudo.build