(x_make_frame_visible): Don't call XMapSubwindows.
(x_iconify_frame): Likewise.
(pending_autoraise_frame): New variable.
(x_new_focus_frame): Don't autoraise here; just set that var.
(XTread_socket): Raise that frame here.
(x_destroy_window): Call clear_mouse_face if necessary.
(x_new_font): Always call x_set_window_size.
(x_wm_set_size_hint): If PROMPTING is 0,
copy the old win_gravity field.
If USPosition is set, don't set PWinGravity.
(x_wm_set_size_hint): If change_gravity is 0, just don't set the gravity.