Merge the PI enabling works from the branch

First round of PI enabling work:
1) PiPeiCis changes (CONST, EFI_PEI_FILE_HANDLE.. etc)
2) Make use of FirmwareVolume 2 protocol.
3) Verified for Nt32Pkg and real platform for S3.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3772 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/DxePiLib/DxePiLib.inf

@@ -0,0 +1,46 @@
+#/** @file
+# Component description file library instance for PiLib for DXE phase.
+#
+# Library to abstract utility functions that is related to PI Specification.
+#
+# Copyright (c) 2007, Intel Corporation.
+#
+#  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
+#  http://opensource.org/licenses/bsd-license.php
+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = DxePiLib
+  FILE_GUID                      = EE680C58-FFC0-4a5d-858F-66FF9C84BC9F
+  MODULE_TYPE                    = DXE_DRIVER
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PiLib|DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_SMM_DRIVER UEFI_APPLICATION UEFI_DRIVER
+  EDK_RELEASE_VERSION            = 0x00020000
+  EFI_SPECIFICATION_VERSION      = 0x00020000
+
+
+#
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#
+
+[Sources.common]
+  DxePiLib.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+
+[LibraryClasses]
+  MemoryAllocationLib
+  DebugLib
+
+[Protocols]
+  gEfiFirmwareVolume2ProtocolGuid               # ALWAYS_CONSUMED
+