Roll HarfBuzz to 1.2.1

third_party/harfbuzz-ng/NEWS

Index: third_party/harfbuzz-ng/NEWS
diff --git a/third_party/harfbuzz-ng/NEWS b/third_party/harfbuzz-ng/NEWS
index 698256d4c52366e659ddc3451745c3f5566e87a1..b1b63b2c5af19b33e3c65f6668fdec49cf69100c 100644
--- a/third_party/harfbuzz-ng/NEWS
+++ b/third_party/harfbuzz-ng/NEWS
@@ -1,3 +1,36 @@
+Overview of changes leading to 1.2.1
+Friday, February 23, 2016
+====================================
+
+- CoreText: Fix bug with wrong scale if font scale was changed later.
+  https://github.com/libass/libass/issues/212
+- CoreText: Drastically speed up font initialization.
+- CoreText: Fix tiny leak.
+- Group ZWJ/ZWNJ with previous syllable under cluster-level=0.
+  https://github.com/behdad/harfbuzz/issues/217
+- Add test/shaping/README.md about how to add tests to the suite.
+
+
+Overview of changes leading to 1.2.0
+Friday, February 19, 2016
+====================================
+
+- Fix various issues (hangs mostly) in case of memory allocation failure.
+- Change mark zeroing types of most shapers from BY_UNICODE_LATE to
+  BY_GDEF_LATE.  This seems to be what Uniscribe does.
+- Change mark zeroing of USE shaper from NONE to BY_GDEF_EARLY.  That's
+  what Windows does.
+- Allow GPOS cursive connection on marks, and fix the interaction with
+  mark attachment.  This work resulted in some changes to how mark
+  attachments work.  See:
+  https://github.com/behdad/harfbuzz/issues/211
+  https://github.com/behdad/harfbuzz/commit/86c68c7a2c971efe8e35b1f1bd99401dc8b688d2
+- Graphite2 shaper: improved negative advance handling (eg. Nastaliq).
+- Add nmake-based build system for Windows.
+- Minor speedup.
+- Misc. improvements.
+
+
 Overview of changes leading to 1.1.3
 Monday, January 11, 2016
 ====================================