* w89k-rom.c (_initialize_w89k ): Call new init function
(init_w89k_cmds): Convert to dynamic initialization of
monitor_ops data structure for forward compatability with
additions to the data structure.
* dbug-rom.c (_initialize_dbug_rom): ditto
(init_dbug_cmds): ditto
* m32r-rom.c (_initialize_m32r_rom): ditto
(init_m32r_cmds): ditto