Update freetype to 2.5.4.

third_party/freetype/include/ftbitmap.h

Index: third_party/freetype/include/ftbitmap.h
diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/include/freetype/ftbitmap.h b/third_party/freetype/include/ftbitmap.h
similarity index 95%
rename from core/src/fxge/fx_freetype/fxft2.5.01/include/freetype/ftbitmap.h
rename to third_party/freetype/include/ftbitmap.h
index 96407909257c9fffedb1a077ff99d4b7b7aa39e8..eae716904b4420a4e06eec73d05ee2b5959e9c62 100644
--- a/core/src/fxge/fx_freetype/fxft2.5.01/include/freetype/ftbitmap.h
+++ b/third_party/freetype/include/ftbitmap.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    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,       */
@@ -20,8 +20,8 @@
 #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!"
@@ -45,7 +45,9 @@ FT_BEGIN_HEADER
   /*    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').        */
   /*                                                                       */
   /*************************************************************************/
 
@@ -122,6 +124,9 @@ FT_BEGIN_HEADER
   /*    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,