Update freetype to 2.5.4.

third_party/freetype/include/fttrigon.h

 /***************************************************************************/
 /*                                                                         */
 /*  fttrigon.h                                                             */
 /*                                                                         */
 /*    FreeType trigonometric functions (specification).                    */
 /*                                                                         */
 /*  Copyright 2001, 2003, 2005, 2007, 2013 by                              */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
 /*  modified, and distributed under the terms of the FreeType project      */
 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
 /*  this file you indicate that you have read the license and              */
 /*  understand and accept it fully.                                        */
 /*                                                                         */
 /***************************************************************************/
 
 
 #ifndef __FTTRIGON_H__
 #define __FTTRIGON_H__
 
-#include "freetype.h"
+#include FT_FREETYPE_H
 
 #ifdef FREETYPE_H
 #error "freetype.h of FreeType 1 has been loaded!"
 #error "Please fix the directory search order for header files"
 #error "so that freetype.h of FreeType 2 is found first."
 #endif
 
 
 FT_BEGIN_HEADER
 
@@ skipping 197 matching lines @@
    *
    *   This function is useful to retrieve both the sinus and cosinus of a
    *   given angle quickly.
    *
    * @output:
    *   vec ::
    *     The address of target vector.
    *
    * @input:
    *   angle ::
-   *     The address of angle.
+   *     The input angle.
    *
    */
   FT_EXPORT( void )
   FT_Vector_Unit( FT_Vector*  vec,
                   FT_Angle    angle );
 
 
   /*************************************************************************
    *
    * @function:
    *   FT_Vector_Rotate
    *
    * @description:
    *   Rotate a vector by a given angle.
    *
    * @inout:
    *   vec ::
    *     The address of target vector.
    *
    * @input:
    *   angle ::
-   *     The address of angle.
+   *     The input angle.
    *
    */
   FT_EXPORT( void )
   FT_Vector_Rotate( FT_Vector*  vec,
                     FT_Angle    angle );
 
 
   /*************************************************************************
    *
    * @function:
@@ skipping 68 matching lines @@
 
   /* */
 
 
 FT_END_HEADER
 
 #endif /* __FTTRIGON_H__ */
 
 
 /* END */