ChangeLog

	  Ethernet and SLIP are enabled (2014-11-16).
	* net/, include/, various files:  Rename CONFIG_NET_RECEIVE_WINDOW to
	  CONFIG_NET_ETH_TCP_RECVWNDO and CONFIG_NET_SLIP_TCP_RECVWNDO.  Add
	  data structures and logic to handler different TCP receive windows
	  when both Ethernet and SLIP are enabled (2014-11-16).
	* configs/sama5d4-ek/bridge: Add a simple test for the dual EMACs on
	  the SAMA5D4 (2014-11-17).
	* arch/arm/src/sama5/sam_emacb.c:  Fix several typos that will prevent
	  EMAC1 from initializing properly (2014-11-17).
	* include/nuttx/net/ip.h and tcp.h, net/icmp/icmp_send.c and
	  igmp/igmp_send.c: Move IP header flags from tcp.h to ip.h and rename
	  IP_FLAGS vs TCPFLAGS.  The problem fixed here is that there IP flags
	  were not available when TCP was disabled.  The IP flags are used in
	  ICMP and IGMP (2014-11-17).