ADD : prepare CMake structure for continuous integration.
ADD : macro to automatically compute Project.xml file when CMake look accross CamiTK projects. Project.xml file describes the Project CamiTK with its subprojects : CMake targets (libraries, exec) and their dependencies. This file is used by CDash to correctly handle the Project structure on the dashboard. git-svn-id: svn+ssh://scm.forge.imag.fr/var/lib/gforge/chroot/scmrepos/svn/camitk/trunk/camitk@203 ec899d31-69d1-42ba-9299-647d76f65fb3