Header cleanup (bug#4703)

Remove prototypes for nonexistent functions from Xft.h, and add missing
include in xftglyphs.c
Signed-off-by: Julien Cristau <jcristau@debian.org>

include/X11/Xft/Xft.h

@@ -127,16 +127,6 @@ XftColorFree (Display	*dpy,
 	      Colormap	cmap,
 	      XftColor	*color);
 
-
-/* xftcore.c */
-
-/* xftdir.c */
-FcBool
-XftDirScan (FcFontSet *set, _Xconst char *dir, FcBool force);
-
-FcBool
-XftDirSave (FcFontSet *set, _Xconst char *dir);
-
 /* xftdpy.c */
 Bool
 XftDefaultHasRender (Display *dpy);
@@ -619,8 +609,6 @@ XftTextRenderUtf16 (Display	    *dpy,
 		    FcEndian	    endian,
 		    int		    len);
 
-/* xftstr.c */
-
 /* xftxlfd.c */
 FcPattern *
 XftXlfdParse (_Xconst char *xlfd_orig, Bool ignore_scalable, Bool complete);

src/xftglyphs.c

@@ -23,6 +23,10 @@
 #include "xftint.h"
 #include <freetype/ftoutln.h>
 
+#if HAVE_FT_GLYPHSLOT_EMBOLDEN
+#include <freetype/ftsynth.h>
+#endif
+
 static const int    filters[3][3] = {
     /* red */
 #if 0