define __GDK_H_INSIDE__ around including all other headers.

define __GDK_H_INSIDE__ around including all other headers.

2008-05-28  Michael Natterer  <mitch@imendio.com>

	* gdk/gdk.h: define __GDK_H_INSIDE__ around including all other
	headers.

	* gdk/gdkenumtypes.h.template
	* gdk/gdk*.h: add single-include guards that #error out if
	GTK_DISABLE_SINGLE_INCLUDES is defined and any of these files is
	included individually. Also removed some redundant includes and
	did some tiny trailing whitespace removal that's not worth to
	commit separately.

	* gdk/gdkprivate.h: include <gdk/gdk.h> instead of individual
	files.

	* gdk/win32/gdkwin32.h
	* gdk/x11/gdkx.h: only include <gdk/gdkprivate.h> and remove all
	other includes.

svn path=/trunk/; revision=20217