* elf32-spu.c (struct call_info): New member broken_cycle.

	* elf32-spu.c (struct call_info): New member broken_cycle.
	(remove_cycle): Instead of physically removing call_info structures
	to break call graph cycles, mark them using the broken_cycle flag.
	(mark_overlay_section): Respect broken_cycle flag.
	(unmark_overlay_section): Likewise.
	(collect_lib_sections): Likewise.
	(collect_overlays): Likewise.
	(sum_stack): Likewise.