MdePkg: Clean up source files

1. Do not use tab characters
2. No trailing white space in one line
3. All files must end with CRLF

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>

MdePkg/Library/UefiApplicationEntryPoint/ApplicationEntryPoint.c

@@ -1,7 +1,7 @@
 /** @file
   Entry point library instance to a UEFI application.
 
-Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
 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
@@ -78,13 +78,13 @@ _ModuleEntryPoint (
 
 /**
   Invokes the library destructors for all dependent libraries and terminates
-  the UEFI Application. 
+  the UEFI Application.
 
   This function calls ProcessLibraryDestructorList() and the EFI Boot Service Exit()
   with a status specified by Status.
 
   @param  Status  Status returned by the application that is exiting.
-  
+
 **/
 VOID
 EFIAPI
@@ -100,7 +100,7 @@ Exit (
 
 
 /**
-  Required by the EBC compiler and identical in functionality to _ModuleEntryPoint(). 
+  Required by the EBC compiler and identical in functionality to _ModuleEntryPoint().
 
   @param  ImageHandle  The image handle of the UEFI Application.
   @param  SystemTable  A pointer to the EFI System Table.