Apply license LGPLv3

• copy http://www.gnu.org/licenses/lgpl.txt into a file named COPYING, into all modules and at the root of the application distrib
• add a link on the copyright and on the license from the sonar web application (header ?)
• add this header to all the java/ruby files :

Sonar, entreprise quality control tool.
Copyright (C) 2007-2008 Hortis-GRC SA
be_agile HAT hortis DOT ch

Sonar is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.

Sonar is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with

Unknown macro: {library}

; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

Olivier Lange gave us an ant task to automatically update file headers. It also contains a script to find files without license. See attachment. Be carfeul, the task currently sets GPLv3 license. It must be updated to set LGPLv3.