Upgrade liblouis to 2.6.0.

third_party/liblouis/overrides/liblouis/config.h

Index: third_party/liblouis/overrides/liblouis/config.h
diff --git a/third_party/liblouis/overrides/liblouis/config.h b/third_party/liblouis/overrides/liblouis/config.h
index 6ae801241a3764cc61286f4509411bcdfce25d9f..53b5a5621bc70342bc49fccf58fd4c7343d113ca 100644
--- a/third_party/liblouis/overrides/liblouis/config.h
+++ b/third_party/liblouis/overrides/liblouis/config.h
@@ -1,18 +1,6 @@
-/*
- * Copyright 2013 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 
 #define TABLESDIR ""
-#define PACKAGE_VERSION "2.5.1-google"
+#define PACKAGE_VERSION "2.6.0"