* include/mswsock.h: New file.

	* include/mswsock.h: New file.
	* include/ws2tcpip.h: New file.
	* include/winsock.h (IPPROTO_IGMP): New define.
	(IPPROTO_GGP): Correct value.
	(SO_* macros): Remove mswsock defines.
	(TCP_BSDURGENT): Likewise.
	(IP_* macros): Add comment warning of WinSock2 incompatibility
	(WSARecvEx): Remove mswsock prototype.
	(TransmitFile): Likewise.
	(AcceptEx): Likewise.
	(GetAcceptExSockaddrs): Likewise.
	(struct _TRANSMIT_FILE_BUFFERS): Remove mswsock definition.
	(#include <mswsock.h>): Add directive and explanatory comment
	* include/winsock2.h (header guard): add guard for  _WINSOCK_H
	(_WINSOCK_H): Define to prevent later inclusion of winsock.h
	(#include <winsock.h>): Replace directive with winsock.h file content
	The following changes apply to the merged file:
	(FD_SET): Keep winsock2.h definition, delete winsock.h definition
	(SOMAXCONN): Likewise
	(#include <nspapi.h>): Move - don't include until LPSOCKADDR defined
	(IP_* macros): Delete WinSock1 definitions (WinSock2 definitions now
	in ws2tcpip.h)
	(struct ip_mreq): Delete (now defined in ws2tcpip.h for WinSock2)
	(FD_*_BIT and FD_* defines): Place together and extend to
	FD_MAX_EVENTS 10
	(AF* defines): Extend to AF_MAX 10
	(WSAIsBlocking): #if 0 out prototype (N/A in WinSock2)
	(WSAUnhookBlockingHook): Likewise.
	(WSASetBlockingHook): Likewise.
	(WSACancelBlockingCall): Likewise.
	(WSAEINPROGRESS): Comment as not raised in WinSock2.
	(#include <mswsock.h>): Delete directive inherited from winsock.h
	(WSA_QOS* defines): Add QualityOfService error codes.
	(SIO_* defines): Add new macros
	* include/ipexport.h (IP_STATUS flags): Add definitions.
	(IP_FLAG_DF): Likewise.
	(IP_OPT_* ): Likewise.
	(struct ip_option_information): Likewise.
	(struct icmp_echo_reply): Likewise.