Roll harfbuzz-ng to 0.9.40

third_party/harfbuzz-ng/NEWS

+Overview of changes leading to 0.9.40
+Friday, March 20, 2015
+=====================================
+
+- Another hb-coretext crasher fix.  Ouch!
+- Happy Norouz!
+
+
+Overview of changes leading to 0.9.39
+Wednesday, March 4, 2015
+=====================================
+
+- Critical hb-coretext fixes.
+- Optimizations and refactoring; no functional change
+  expected.
+- Misc build fixes.
+
+
+Overview of changes leading to 0.9.38
+Friday, January 23, 2015
+=====================================
+
+- Fix minor out-of-bounds access in Indic shaper.
+- Change New Tai Lue shaping engine from South-East Asian to default,
+  reflecting change in Unicode encoding model.
+- Add hb-shape --font-size.  Can take up to two numbers for separate
+  x / y size.
+- Fix CoreText and FreeType scale issues with negative scales.
+- Reject blobs larger than 2GB.  This might break some icu-le-hb clients
+  that need security fixes.  See:
+  http://www.icu-project.org/trac/ticket/11450
+- Avoid accessing font tables during face destruction, in casce rogue
+  clients released face data already.
+- Fix up gobject-introspection a bit.  Python bindings kinda working.
+  See README.python.
+- Misc fixes.
+- API additions:
+  hb_ft_face_create_referenced()
+  hb_ft_font_create_referenced()
+
+
+Overview of changes leading to 0.9.37
+Wednesday, December 17, 2014
+=====================================
+
+- Fix out-of-bounds access in Context lookup format 3.
+- Indic: Allow ZWJ/ZWNJ before syllable modifiers.
+
+
+Overview of changes leading to 0.9.36
+Thursday, November 20, 2014
+=====================================
+
+- First time that three months went by without a release since
+  0.9.2 was released on August 10, 2012!
+- Fix performance bug in hb_ot_collect_glyphs():
+  https://bugzilla.mozilla.org/show_bug.cgi?id=1090869
+- Add basic vertical-text support to hb-ot-font.
+- Misc build fixes.
+
+
 Overview of changes leading to 0.9.35
 Saturday, August 13, 2014
 =====================================
 
 - Fix major shape-plan caching bug when more than one shaper were
   provided to hb_shape_full() (as exercised by XeTeX).
   http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1246370.html
 - Fix Arabic fallback shaping regression.  This was broken in 0.9.32.
 - Major hb-coretext fixes.  That backend is complete now, including
   respecing buffer direction and language, down to vertical writing.
@@ skipping 62 matching lines @@
 
     Ie, HarfBuzz itself checks whether the segment is at the beginning/end
     of the paragraph.  Clients that only pass item-at-a-time to HarfBuzz
     continue not setting any flags whatsoever.
 
     Another way to put it is: if there's pre-context text in the buffer,
     HarfBuzz ignores the BOT flag.  If there's post-context, it ignores
     EOT flag.
 
 
+Overview of changes leading to 0.9.33
+Tuesday, July 22, 2014
+=====================================
+
+- Turn off ARabic 'cswh' feature that was accidentally turned on.
+- Add HB_TAG_MAX_SIGNED.
+- Make hb_face_make_immutable() really make face immutable!
+- Windows build fixes.
+
+
 Overview of changes leading to 0.9.32
 Thursday, July 17, 2014
 =====================================
 
 - Apply Arabic shaping features in spec order exactly.
 - Another fix for Mongolian free variation selectors.
 - For non-Arabic scripts in Arabic shaper apply 'rlig' and 'calt'
   together.
 - Minor adjustment to U+FFFD logic.
 - Fix hb-coretext build.
@@ skipping 951 matching lines @@
     HB_VERSION_MAJOR
     HB_VERSION_MINOR
     HB_VERSION_MICRO
     HB_VERSION_STRING
     HB_VERSION_CHECK()
     hb_version()
     hb_version_string()
     hb_version_check()