(x_handle_tool_bar_click): Store the frame in the

(x_handle_tool_bar_click): Store the frame in the
frame_or_window slot of TOOL_BAR_EVENT input events instead of
consing.  For prefix events, store the frame in the `arg' slot of
the event, otherwise store the key there.
(XTread_socket): Instead of consing, use the frame_or_window slot
of HELP_EVENTs for the frame, and the `arg' slot for the help
string.