3.927; Medea Destiny in-world contribution

@bell.lsl - Medea: "Update g_kOwners in on_rez event, as we don't
necessarily reset this script and currently we may get failed permission
requests targeting the wrong avatar! See line 513. Added check for
runaway, if bell should be hidden, sleep for 4 seconds then re-hide the
bell elements. This is to avoid other scripts resetting visibility. See
line 712. Added changed event: INVENTORY changes mean more sounds may be
available, so redo prepareSounds(), and LINK to redo
BuildBellElementList(). See line 753"

@camera.lsl - Medea: "added perms check before attempting to clear
camera params in case of reset when collar not worn."