* elf32-spu.c (insert_callee): Reorder call list so most recent

	* elf32-spu.c (insert_callee): Reorder call list so most recent
	call is always first.
	(interesting_section): Move.
	(mark_functions_via_relocs): Fold interesting_section and
	reloc_count tests in callers to here.  Simplify output section
	owner test.
	(discover_functions): Set "gaps" when no symbols and some
	"interesting_section".  Run pasted_function loop for no symbol
	bfds.
	(for_each_node, transfer_calls): New functions.
	(mark_non_root): Adjust to suit for_each_node.
	(call_graph_traverse): Likewise.  Fix memory leak.  Rename to..
	(remove_cycles): ..this.
	(build_call_tree): Use for_each_node and transfer_calls.
	(struct _sum_stack_param): New.
	(sum_stack): Adjust to suit for_each_node.  Return error on
	malloc failure.  Move code to print root node cumulative stack from..
	(spu_elf_stack_analysis): ..here.  Use for_each_node.