use #pragma once

libs/string/pooledstring.h

@@ -1,6 +1,5 @@
 
-#if !defined( INCLUDED_POOLEDSTRING_H )
-#define INCLUDED_POOLEDSTRING_H
+#pragma once
 
 #include <map>
 #include "generic/static.h"
@@ -88,6 +87,3 @@ public:
 		return ( *m_i ).key;
 	}
 };
-
-
-#endif

libs/string/string.h

@@ -19,8 +19,7 @@
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#if !defined( INCLUDED_STRING_STRING_H )
-#define INCLUDED_STRING_STRING_H
+#pragma once
 
 /// \file
 /// C-style null-terminated-character-array string library.
@@ -601,5 +600,3 @@ struct RawStringLessNoCase
 		return string_less_nocase( x, y );
 	}
 };
-
-#endif

libs/string/stringfwd.h

@@ -19,8 +19,7 @@
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#if !defined( INCLUDED_STRING_STRINGFWD_H )
-#define INCLUDED_STRING_STRINGFWD_H
+#pragma once
 
 // forward-declaration of CopiedString
 
@@ -31,5 +30,3 @@ class CopiedBuffer;
 template<typename Buffer>
 class String;
 typedef String< CopiedBuffer< DefaultAllocator<char> > > CopiedString;
-
-#endif