[ #7876 ] Remove unused class attribute, rename all attribute use use m_ for private member, m_p for private pointer, m_s for private static and m_sp for private static pointer

[ #7876 ] Update copyright from 2010 to 2012 (next version wont be released until then, so why not doing it now)

See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624571

It won't build against gnome3.