1)Remove “Back to Previous Page'”, since it cannot go back to “Device Manager page.

2)Add Configure item in page.
3)Add more security check when storing IP setting, to correctly sync the operations between Ip4ConfigDxe and ifconfig.efi


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9693 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/Ip4ConfigDxe/Ip4ConfigDriver.c

@@ -1,7 +1,7 @@
 /** @file
   The driver binding for IP4 CONFIG protocol.
 
-Copyright (c) 2006 - 2009, Intel Corporation.<BR>
+Copyright (c) 2006 - 2010, 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<BR>
@@ -158,7 +158,7 @@ Ip4ConfigDriverBindingStart (
   EFI_STATUS                    Status;
   UINT32                        Index;
   EFI_DEVICE_PATH_PROTOCOL      *ParentDevicePath;
-  
+
   Status = gBS->HandleProtocol (
                   ControllerHandle,
                   &gEfiDevicePathProtocolGuid,