Turns on the ability to intercept SMS messages starting with "(DBLoc)".
Locating Reporting can receive message from 6 different BoonDocker smart
phones.
The Intercepted SMS message is turned into a WayPoint. Waypoints
will use a new color LocRef_x(1,2,3,4,5,6) symbol.
Additional messages from the same user will update the WayPoint's
location and time.
Messages from users beyond 6 are ignored.