Add a drag_data_received handler for the label.

Add a drag_data_received handler for the label.

Tue Jan 12 18:30:51 1999  Owen Taylor  <otaylor@redhat.com>

	* gtk/testdnd.c (label_drag_data_received): Add
	a drag_data_received handler for the label.

Tue Jan 12 15:01:50 1999  Owen Taylor  <otaylor@redhat.com>

        * gdk/gdkevents.c: Removed the putback_events queue,
	since it was causing problems with event ordering -
	just keep a single queue. If we need it, we can
	add priorities to events.

	* gdk/gdkevents.c: Annotate events with flags - we allocate
	a GdkEventPrivate structure in gdk_event_new() and use these
	flags to mark an event being translated as "pending" -
	I.e., not yet ready to be dequeued. So we can put
	the event on the queue and get the order of the
	events right. (This solves the double-click problems)

	* gdk/gdk.h gdk/gdkevents.h: Add gdk_event_peek() to get a copy
	of the next event on the event queue.

	* gtk/gtkmain.c (gtk_main_do_event): Use gdk_event_peek()
	to check the next event without causing event queue
	reordering.