Update freetype to 2.5.4.

third_party/freetype/include/ftbitmap.h

 /***************************************************************************/
 /*                                                                         */
 /*  ftbitmap.h                                                             */
 /*                                                                         */
 /*    FreeType utility functions for bitmaps (specification).              */
 /*                                                                         */
-/*  Copyright 2004-2006, 2008, 2013 by                                     */
+/*  Copyright 2004-2006, 2008, 2013, 2014 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 __FTBITMAP_H__
 #define __FTBITMAP_H__
 
 
-#include "../ft2build.h"
-#include "freetype.h"
+#include <ft2build.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
 
 
   /*************************************************************************/
   /*                                                                       */
   /* <Section>                                                             */
   /*    bitmap_handling                                                    */
   /*                                                                       */
   /* <Title>                                                               */
   /*    Bitmap Handling                                                    */
   /*                                                                       */
   /* <Abstract>                                                            */
   /*    Handling FT_Bitmap objects.                                        */
   /*                                                                       */
   /* <Description>                                                         */
-  /*    This section contains functions for converting FT_Bitmap objects.  */
+  /*    This section contains functions for handling @FT_Bitmap objects.   */
+  /*    Note that none of the functions changes the bitmap's `flow' (as    */
+  /*    indicated by the sign of the `pitch' field in `FT_Bitmap').        */
   /*                                                                       */
   /*************************************************************************/
 
 
   /*************************************************************************/
   /*                                                                       */
   /* <Function>                                                            */
   /*    FT_Bitmap_New                                                      */
   /*                                                                       */
   /* <Description>                                                         */
@@ skipping 56 matching lines @@
   /* <Return>                                                              */
   /*    FreeType error code.  0~means success.                             */
   /*                                                                       */
   /* <Note>                                                                */
   /*    The current implementation restricts `xStrength' to be less than   */
   /*    or equal to~8 if bitmap is of pixel_mode @FT_PIXEL_MODE_MONO.      */
   /*                                                                       */
   /*    If you want to embolden the bitmap owned by a @FT_GlyphSlotRec,    */
   /*    you should call @FT_GlyphSlot_Own_Bitmap on the slot first.        */
   /*                                                                       */
+  /*    Bitmaps in @FT_PIXEL_MODE_GRAY2 and @FT_PIXEL_MODE_GRAY@ format    */
+  /*    are converted to @FT_PIXEL_MODE_GRAY format (i.e., 8bpp).          */
+  /*                                                                       */
   FT_EXPORT( FT_Error )
   FT_Bitmap_Embolden( FT_Library  library,
                       FT_Bitmap*  bitmap,
                       FT_Pos      xStrength,
                       FT_Pos      yStrength );
 
 
   /*************************************************************************/
   /*                                                                       */
   /* <Function>                                                            */
@@ skipping 83 matching lines @@
 
   /* */
 
 
 FT_END_HEADER
 
 #endif /* __FTBITMAP_H__ */
 
 
 /* END */