Improve scheduler dumps of ready list

Improve scheduler dumps of ready list

	* sched-int.h (struct _haifa_insn_data:last_rfs_win): New field.
	* haifa-sched.c (INSN_LAST_RFS_WIN): New access macro.
	(rfs_result): Set INSN_LAST_RFS_WIN.  Update signature.
	(rank_for_schedule): Update calls to rfs_result to pass new parameters.
	(print_rank_for_schedule_stats): Print out elements of ready list that
	ended up on their respective places due to each of the sorting
	heuristics.
	(ready_sort): Update.
	(debug_ready_list_1): Improve printout for SCHED_PRESSURE_MODEL.
	(schedule_block): Update.

From-SVN: r216621