* breakpoint.h (enum bp_loc_type, struct bp_location): New.

	* breakpoint.h (enum bp_loc_type, struct bp_location): New.
	(struct breakpoint): Remove address, shadow_contents, inserted,
	and duplicate.  Add a struct bp_location.
	* breakpoint.c (condition_command, read_memory_nobpt)
	(insert_breakpoints, remove_breakpoints, remove_hw_watchpoints)
	(reattach_breakpoints, update_breakpoints_after_exec)
	(detach_breakpoints, remove_breakpoint, mark_breakpoints_out)
	(breakpoint_init_inferior, breakpoint_here_p)
	(breakpoint_inserted_here_p, deprecated_frame_in_dummy)
	(breakpoint_thread_match, bpstat_stop_status)
	(bpstat_have_active_hw_watchpoints, print_one_breakpoint)
	(describe_other_breakpoints, check_duplicates)
	(make_breakpoint_permanent, create_thread_event_breakpoint)
	(disable_breakpoints_in_shlibs, re_enable_berakpoints_in_shlibs)
	(set_longjmp_resume_breakpoint, mention, create_breakpoints)
	(watch_command_1, print_one_exception_catchpoint)
	(clear_command, breakpoint_re_set_one): Adjust member accesses to
	use the breakpoint's ->loc.
	(set_raw_breakpoint): Likewise.  Initialize ->loc.
	(delete_breakpoint): Likewise.  Free ->loc.