* lto-wrapper.c (ltrans_priorities): New static var.
	(cmp_priority): New.
	(run_gcc): Read priorities and if doing parallel build order
	the Makefile by them.

	* lto.c (cmp_partitions_size): Remove.
	(lto_wpa_write_files): Also output priorities; do not sort partitions.
	(cmp_partition_order): Move to ...
	* lto-partition.c (cmp_partition_order): ...
	(lto_1_to_1_map): Sort partitions.

From-SVN: r259767