Change signatures for gdk_drag_begin() and gdk_drag_motion() so that the

Change signatures for gdk_drag_begin() and gdk_drag_motion() so that the

Wed Jan 27 18:57:57 1999  Owen Taylor  <otaylor@redhat.com>

	* gdk/gdk.h gdk/gdkdnd.c: Change signatures for
	gdk_drag_begin() and gdk_drag_motion() so that the set
	of possible actions is passed on each motion, not just at
	the beginning of the drag. We do this so that
	we can restrict the set of possible drag events
	when the user presses a modifier key during a
	drag.

	* gdk/gdkdnd.c: Send a motif Operation-changed
	message when the set of possible actions change,
	as well as when the suggested action change.

	* gdk/gdkdnd.c: Change the XdndActionList whenever
	the set of actions change.

	* gdk/gdkdnd.c: Add a filter to catch changes to
	the XdndActionList property for the source widget.

	* gtk/gtkdnd.c: Change the set of possible actions
	when the user presses Control, Shift, or Control-Shift,
	to only include the corresponding action.

	* gtk/gtkdnd.c (gtk_drag_button_release_cb):
	Disconnect button signals before we possibly
	free info structure.