* modules/gui/skins: got rid of init_lock and init_cond which aren't needed if you use vlc_thread_ready().
   started to implement X11Region and integrated the wxWindows dialogs.
* configure.ac.in: the X11 skins are the default ones when you use --enable-skins. To select the GTK2 version, you also need to use --with-gtk2-skins.