Tiebreaker for DC Source Status

The DC Source Status DGNs are to be broadcast by the highest priority device, as defined in Byte 1 of each DGN. However, no tiebreaker is indicated when two devices have the same priority.

Proposed: Add to 6.5.1, "If two devices have the same published priority, the device with the higher source address shall have priority."

This is consistent with other tiebreaking scenarios, such as Date Time Status.

Submitted by Martin Perlot, SilverLeaf Electronics, Inc.