ClearCase: Add commercial license information

Change-Id: I6e94ffe61451984ba06630e52db3c2901687b7c9
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

src/plugins/clearcase/ClearCase.pluginspec.in

@@ -2,9 +2,13 @@
     <vendor>AudioCodes</vendor>
     <copyright>(C) 2012 AudioCodes Ltd.</copyright>
     <license>
+Commercial Usage
+
+Licensees holding valid Qt Commercial licenses may use this plugin in accordance with the Qt Commercial License Agreement provided with the Software or, alternatively, in accordance with the terms contained in a written agreement between you and Nokia.
+
 GNU Lesser General Public License Usage
 
-this plugin may be used under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation.  Please review the following information to ensure the GNU Lesser General Public License version 2.1 requirements will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+Alternatively, this plugin may be used under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation.  Please review the following information to ensure the GNU Lesser General Public License version 2.1 requirements will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
     </license>
     <category>Version Control</category>
     <description>ClearCase integration.</description>