Fix problem with g_return_if_fail return value.

Fix problem with g_return_if_fail return value.

Sun Oct 21 23:27:00 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkwidget.c (gtk_widget_translate_coordinates): Fix
	problem with g_return_if_fail return value.

 	* gdk/x11/gdkproperty-x11.c docs/Changes-2.0.txt: Move over the
	virtual atom code from the gdk-multihead branch, removing the per-display
	part. Virtualizing atoms needs to be done now to prevent compat
	breakage in direct Xlib accessing code in the future. (#62208)

 	* gdk/x11/gdkx.h: gdk/gdk/x11/gdkproperty-x11.c: Export
 	gdk_x11_xatom_to_atom, gdk_x11_atom_to_xatom().

	* gdk/gdktypes.h docs/Changes-2.0.txt: Make GdkAtom
	an opaque pointer type so the compiler catches attempts
	to mingle it with X atoms.

	* gdk/x11/{gdkdnd-x11.c,gdkevents-x11.c,gdkglobals-x11.c,
	  gdkkeys-x11.c, gdkmain-x11.c, gdkprivate-x11.c,
	  gdkproperty-x11.c, gdkselection-x11.c, gdkwindow-x11.c}
	  gtk/{gtkclist.c,gtkctree.c,gtkdnd.c,gtkplug.c,gtksocket.c}
	  tests/testdnd.c,tests/testselection.c:
	Fix up for above atom changes.

	* gdk/gdkselection.h (GDK_SELECTION_CLIPBOARD): Add, since we
	now have the ability to add custom predefines.

	* gtk/{gtkentry.c,gtklabel.c,gtkoldeditable.c,gtktextview.c}:
	Use GDK_SELECTION_CLIPBOARD instead of GDK_NONE in calls
	to gtk_clipboard_get().

	* gdk/win32/gdkproperty-win32.c: Add CLIPBOARD, fix up
	for GdkAtom => pointer change.

	* gdk/linux-fb/gdkproperty-fb.c: Fix handling of predefined
	atoms, fix for GdkAtom => pointer change.