[Opus] Update to v1.2.1

third_party/opus/src/doc/build_oggdraft.sh

+#!/bin/sh
+
+# Copyright (c) 2012 Xiph.Org Foundation and Mozilla Corporation
+#
+#  This file is extracted from RFC6716. Please see that RFC for additional
+#  information.
+#
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions
+#  are met:
+#
+#  - Redistributions of source code must retain the above copyright
+#  notice, this list of conditions and the following disclaimer.
+#
+#  - Redistributions in binary form must reproduce the above copyright
+#  notice, this list of conditions and the following disclaimer in the
+#  documentation and/or other materials provided with the distribution.
+#
+#  - Neither the name of Internet Society, IETF or IETF Trust, nor the
+#  names of specific contributors, may be used to endorse or promote
+#  products derived from this software without specific prior written
+#  permission.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+#  OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+#  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+#  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+#  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+#  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#Stop on errors
+set -e
+#Set the CWD to the location of this script
+[ -n "${0%/*}" ] && cd "${0%/*}"
+
+if test -z `which xml2rfc 2> /dev/null`; then
+  echo "Error: couldn't find xml2rfc."
+  echo
+  echo "Please install xml2rfc version 2 or later."
+  echo "E.g. 'pip install xml2rfc' or follow the instructions"
+  echo "on http://pypi.python.org/pypi/xml2rfc/ or tools.ietf.org."
+  exit 1
+fi
+
+echo running xml2rfc
+# version 2 syntax
+xml2rfc draft-ietf-codec-oggopus.xml --text --html