[Change summary]:

1. Update NetLib to a combined NetLib support dual network stack:
1) Add Network Debug facility for IPv4 stack.
2) Extend the library APIs to support IPv6 stack:
   a. NetIp6IsUnspecifiedAddr
   b. NetIp6IsLinkLocalAddr   
   c. NetIp6IsNetEqual
   d. NetLibCreateIPv6DPathNode.
   e. NetIp6PseudoHeadChecksum
   f. NetIp6IsValidUnicast
3) Update the structure definitions:
   a. Update NET_BUF to add EFI_IP6_HEADER and EFI_UDP_HEADER
   b. Add NET_IP6_PSEUDO_HDR
4) Update Ip4IsUnicast to NetIp4IsUnicast

2. Update the impacted modules to adopt the combined NetLib.

3. Clean up coding style errors in all network drivers and libraries.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9391 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.c

@@ -1,7 +1,7 @@
 /** @file
   Transmit the IP4 packet.
   
-Copyright (c) 2005 - 2006, Intel Corporation.<BR>
+Copyright (c) 2005 - 2009, Intel Corporation.<BR>
 All rights reserved. This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -83,7 +83,7 @@ Ip4PrependHead (
   PacketHead->Dst       = HTONL (Head->Dst);
   PacketHead->Checksum  = (UINT16) (~NetblockChecksum ((UINT8 *) PacketHead, HeadLen));
 
-  Packet->Ip            = PacketHead;
+  Packet->Ip.Ip4        = PacketHead;
   return EFI_SUCCESS;
 }