Update M_EXT support in m_copypacket().
Update M_EXT support in m_copypacket().

PR:		7122
Reviewed by:	phk
Submitted by:	Castor Fu <castor@geocast.com>
Originally forgotten by:	julian

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase