* target.c (dummy_target): Don't initialize statically.

	* target.c (dummy_target): Don't initialize statically.
	(init_dummy_target): New function, fills in dummy_target.
	(initialize_targets): Use it.
	* hpux-thread.c (hpux_thread_ops): Don't initialize statically.
	(init_hpux_thread_ops): New function, fills in hpux_thread_ops.
	(_initialize_hpux_thread): Use it.
	* m3-nat.c (m3_ops): Don't initialize statically.
	(init_m3_ops): New function, fills in m3_ops.
	(_initialize_m3): Use it.