gdb/

gdb/
	Code cleanup.
	* breakpoint.c (bpstat_alloc): Remove unused prototype.
	(bpstat_alloc): Change parameters cbs to bs_link_pointer.  Adjust the
	code.
	(bpstat_stop_status): Change root_bs into bs_head and bs_link.  Adjust
	calls of bpstat_alloc.  Remove explicit bs chain termination.