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/UefiLib/UefiLibInternal.h

@@ -21,6 +21,9 @@
 #include <Protocol/DriverConfiguration.h>
 #include <Protocol/DriverDiagnostics.h>
 #include <Protocol/DriverDiagnostics2.h>
+#include <Protocol/FirmwareVolume2.h>
+#include <Protocol/LoadedImage.h>
+
 #include <Guid/EventGroup.h>
 #include <Guid/EventLegacyBios.h>
 #include <Library/UefiLib.h>
@@ -32,4 +35,5 @@
 #include <Library/PcdLib.h>
 #include <Library/PrintLib.h>
 
+
 #endif