* mem-break.c (enum bkpt_type): New.

	* mem-break.c (enum bkpt_type): New.
	(struct breakpoint): New field `type'.
	(set_breakpoint_at): Change return type to struct breakpoint
	pointer.  Set type to `other_breakpoint' by default.
	(delete_breakpoint): Rewrite, supporting more than one breakpoint
	in the breakpoint list.
	(delete_reinsert_breakpoints): Only delete reinsert breakpoints.
	(reinsert_breakpoint): Rename to ...
	(reinsert_raw_breakpoint): ... this.
	(reinsert_breakpoints_at): Adjust.
	* mem-break.h (struct breakpoint): Declare.
	(set_breakpoint_at): Change return type to struct breakpoint
	pointer.