Update bundled freetype to 2.6.1

third_party/freetype/include/freetype/internal/ftstream.h

Index: third_party/freetype/include/freetype/internal/ftstream.h
diff --git a/third_party/freetype/include/internal/ftstream.h b/third_party/freetype/include/freetype/internal/ftstream.h
similarity index 99%
rename from third_party/freetype/include/internal/ftstream.h
rename to third_party/freetype/include/freetype/internal/ftstream.h
index 26618583209bc05fc6c380bf002dfa1e4b7aeb8a..384e5df305cdacb59e3cf0d19cc735fffc3df502 100644
--- a/third_party/freetype/include/internal/ftstream.h
+++ b/third_party/freetype/include/freetype/internal/ftstream.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    Stream handling (specification).                                     */
 /*                                                                         */
-/*  Copyright 1996-2002, 2004-2006, 2011, 2013 by                          */
+/*  Copyright 1996-2015 by                                                 */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -361,7 +361,7 @@ FT_BEGIN_HEADER
                   FT_Long    distance );
 
   /* return current stream position */
-  FT_BASE( FT_Long )
+  FT_BASE( FT_ULong )
   FT_Stream_Pos( FT_Stream  stream );
 
   /* read bytes from a stream into a user-allocated buffer, returns an */