Fix ENGINE_VERSION in mozc_version_template.bzl

This is a follow up CL to a previous CL [1], which should have removed
NACL_DICTIONARY_VERSION, and other previous CLs [2][3], which should
have updated ENGINE_VERSION.

Note that not updating ENGINE_VERSION is not immediately problematic
because dynamic dictoinary update is not enabled in OSS Mozc.  That
said, the current ENGINE_VERSION is 24 and correcting it should still
make sense.

This CL also add a copyright header and license notice to
mozc_version_template.bzl just in case.

 [1]: 5b9c1ed
 [2]: c4a2d46
 [3]: 25f3fcf

BUG=
TEST=
REF_BUG=
REF_CL=123078429,123191246,127786726,131517988
REF_TIME=2016-08-28T01:31:07-07:00
REF_TIME_RAW=1472373067 -0700

src/data/version/mozc_version_template.bzl

@@ -1,20 +1,45 @@
+# -*- coding: utf-8 -*-
+# Copyright 2010-2016, Google Inc.
+# All rights reserved.
+#
+# 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 Google Inc. nor the names of its
+# 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.
+
 MAJOR=2
 MINOR=18
-BUILD=2597
+BUILD=2598
 REVISION=102
-# CAUTION: NACL_DICTIONARY_VERSION is going to be migrated to ENGINE_VERSION.
-# NACL_DICTIONARY_VERSION is the target version of the system dictionary to be
-# downloaded by NaCl Mozc.
-# TODO(noriyukit): Migrate this version to ENGINE_VERSION.
-NACL_DICTIONARY_VERSION=22
 # This version represents the version of Mozc IME engine (converter, predictor,
 # etc.).  This version info is included both in the Mozc server and in the Mozc
 # data set file so that the Mozc server can accept only the compatible version
 # of data set file.  The engine version must be incremented when:
 #  * POS matcher definition and/or conversion models were changed,
 #  * New data are added to the data set file, and/or
 #  * Any changes that loose data compatibility are made.
-ENGINE_VERSION=22
+ENGINE_VERSION=24
 # This version is used to manage the data version and is included only in the
 # data set file.  DATA_VERSION can be incremented without updating
 # ENGINE_VERSION as long as it's compatible with the engine.