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[truetype] Recalculate the sfnt table checksum always.

* src/truetype/ttobjs.c (tt_get_sfnt_checksum): Recalculate
the sfnt table checksum even if non-zero value is writte in
the TrueType font header.  Some bad PDF generators write
wrong values.  For detail, see examples and benchmark tests
of the latency by recalculation:
http://lists.gnu.org/archive/html/freetype-devel/2011-04/msg00091.html
http://lists.gnu.org/archive/html/freetype-devel/2011-04/msg00096.html

git/fs: mount .git/fs: mount/attach disallowed

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,5 +1,17 @@

 2011-04-30  suzuki toshiya  <[email protected]>

+	[truetype] Recalculate the sfnt table checksum always.

+

+	* src/truetype/ttobjs.c (tt_get_sfnt_checksum): Recalculate

+	the sfnt table checksum even if non-zero value is writte in

+	the TrueType font header.  Some bad PDF generators write

+	wrong values.  For detail, see examples and benchmark tests

+	of the latency by recalculation:

+	http://lists.gnu.org/archive/html/freetype-devel/2011-04/msg00091.html

+	http://lists.gnu.org/archive/html/freetype-devel/2011-04/msg00096.html

+

+2011-04-30  suzuki toshiya  <[email protected]>

+

 	[truetype] Register a set of tricky fonts, NEC FA family.

 	* src/truetype/ttobjs.c (tt_check_trickyness_sfnt_ids):

--- a/src/truetype/ttobjs.c

+++ b/src/truetype/ttobjs.c

@@ -213,8 +213,10 @@

   tt_get_sfnt_checksum( TT_Face    face,

                         FT_UShort  i )

   {

+#if 0 /* if we believe the written value, use following part. */

     if ( face->dir_tables[i].CheckSum )

       return face->dir_tables[i].CheckSum;

+#endif

     if ( !face->goto_table )

       return 0;