Add NOTICE file

Duplicated from COPYING.

Bug: 6299628

Change-Id: If37162b8c311200a1bdf6eff38be580e2b3511d8
Signed-off-by: Wei Zhong <wzhong@google.com>
(cherry picked from commit a2ca78ca7d69124d9b3f37aea0dd2920274bf0d5)
diff --git a/NOTICE b/NOTICE
new file mode 100644
index 0000000..820a9e6
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,24 @@
+HarfBuzz was previously licensed under different licenses.  This was
+changed in January 2008.  If you need to relicense your old copies,
+consult the announcement of the license change on the internet.
+Other than that, each copy of HarfBuzz is licensed under the COPYING
+file included with it.  The actual license follows:
+
+
+Permission is hereby granted, without written agreement and without
+license or royalty fees, to use, copy, modify, and distribute this
+software and its documentation for any purpose, provided that the
+above copyright notice and the following two paragraphs appear in
+all copies of this software.
+
+IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGE.
+
+THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.