Port EdkUnixPkg to UnixPkg. The changes are listed as follows:

1. change *.msa to *.inf, and create platform configuration files .dec&.dsc&.fdf to comply with Edk2 build process
2. using PCD mechanism to replace macro.
3. change Sec code to cowork with PI1.0 Pei Core and produce temparory memory ppi. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5380 6f19259b-4bc3-4df7-8a09-765794883524

UnixPkg/UnixSimpleFileSystemDxe/EntryPoint.c

@@ -0,0 +1,51 @@
+/**@file
+  Entry Point Source file.
+
+  This file contains the user entry point 
+
+  Copyright (c) 2006 - 2008, 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.
+**/
+
+
+
+#include "UnixSimpleFileSystem.h"
+
+/**
+  The user Entry Point for module UnixSimpleFileSystem. The user code starts with this function.
+
+  @param[in] ImageHandle    The firmware allocated handle for the EFI image.  
+  @param[in] SystemTable    A pointer to the EFI System Table.
+  
+  @retval EFI_SUCCESS       The entry point is executed successfully.
+  @retval other             Some error occurs when executing this entry point.
+
+**/
+EFI_STATUS
+EFIAPI
+InitializeUnixSimpleFileSystem(
+  IN EFI_HANDLE           ImageHandle,
+  IN EFI_SYSTEM_TABLE     *SystemTable
+  )
+{
+  EFI_STATUS              Status;
+
+  Status = EfiLibInstallAllDriverProtocols (
+             ImageHandle,
+             SystemTable,
+             &gUnixSimpleFileSystemDriverBinding,
+             ImageHandle,
+             &gUnixSimpleFileSystemComponentName,
+             NULL,
+             NULL
+             );
+  ASSERT_EFI_ERROR (Status);
+
+
+  return Status;
+}