deleted:    data_manager.h
new file:   mmitss_ports_and_message_numbers.h
Replaced data_manager.h with more general mmitss_ports_and_message_numbers.h (gotta change the name!)
The latter will include all the ports and message numbers used in MMITSS
modified:   ab3418_libudp.c
Added build_sigplanmsg and moved a lot of stuff into it from build_spat
modified:   Makefile
	Added references to Arizona source directories; they'll be needed for
	using the Arizona version of J2735 SPaT
modified:   ab3418_libudp.c
	Added printfs of battelle_spat and get_status within their respective function defs
	Added assignments to the first 20 bytes of battelle spat, which will now
	be changed to J2735 spat.
modified:   ab3418commudp.c
        Changed name of header file that has the ports & message ids
	Removed udp ports, since we're sending and receiving from the data manager TCP port
	Added check of current plan, and if it's changed, reread the timing and coordination
	parameters and send them to the data manager.
modified:   ab3418_libudp.h
	Added #includes of local.h (from path), and mmitss_ports_and_message_numbers.h
modified:   ab3418commudp.h
	No real changes; added byte number to some comments
	Added #define states for intersection_status_t
modified:   data_manager.c
	Added connection type (UDP/TCP) to port_t struct
	Changed portnum to inport and outport, for the general case where they may
	be different.
	Changed all connection logic to incorporate added port consideration.
	Added two test messages (sig_plan_msg and battelle_spat) for testing
	Added opening of UDP sockets to listener
	Added check of first two bytes in message. If they're 0xFFFF, we have
	a MMITSS message. If not, it's a DSRC message and the first byte is the
	message ID.
modified:   data_manager.c
	Added connection type (UDP/TCP) to port_t struct
	Changed portnum to inport and outport, for the general case where they may
	be different.
	Changed all connection logic to incorporate added port consideration.
	Added two test messages (sig_plan_msg and battelle_spat) for testing
	Added opening of UDP sockets to listener
	Added check of first two bytes in message. If they're 0xFFFF, we have
	a MMITSS message. If not, it's a DSRC message and the first byte is the  message ID.
modified:   ab3418commudp.c
	Changed name of argument to OpenTCPIP from TRAF_CTL_IFACE_PORT
	to TRAF_CTL_IFACE_OUTPORT
	Added mmitss_msg_hdr_t struct
	Changed port numbers to in and out port numbers
modified:   msgs.h
	Added byte number within messages to comments