Added --enable-fbmanager. This is some experimental code that lets several

Added --enable-fbmanager. This is some experimental code that lets several

2001-06-25  Alexander Larsson  <alexl@redhat.com>

	* configure.in:
	Added --enable-fbmanager. This is some experimental code
	that lets several GtkFB apps coordinate their access to the
	framebuffer.

	* acconfig.h:
	Added ENABLE_FB_MANAGER.

	* gdk/linux-fb/Makefile.am:
	Added gdkfbmanager and gdkfbswitch.

	* gdk/linux-fb/gdkkeyboard-fb.c:
	* gdk/linux-fb/gdkmouse-fb.c:
	* gdk/linux-fb/gdkprivate-fb.h:
	Split device init and open so that
	they can be opened and closed while switched
	away.

	* gdk/linux-fb/gdkmain-fb.c:
	Add the basic manager communication.

	* gdk/linux-fb/gdkrender-fb.c:
	Don't update to the shadow fb if we're
	blocked by the fb manager.