Replace all include guard ifdefs with "#pragma once"

Source/Core/Common/FPURoundMode.h

@@ -1,21 +1,9 @@
-// Copyright (C) 2003 Dolphin Project.
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
 
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, version 2.0.
+#pragma once
 
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License 2.0 for more details.
-
-// A copy of the GPL 2.0 should have been included with the program.
-// If not, see http://www.gnu.org/licenses/
-
-// Official SVN repository and contact information can be found at
-// http://code.google.com/p/dolphin-emu/
-#ifndef FPU_ROUND_MODE_H_
-#define FPU_ROUND_MODE_H_
 #include "CommonTypes.h"
 
 namespace FPURoundMode
@@ -49,4 +37,3 @@ namespace FPURoundMode
 	void LoadSIMDState();
 	void LoadDefaultSIMDState();
 }
-#endif