function.c (block_fragments_nreverse, [...]): New functions.

function.c (block_fragments_nreverse, [...]): New functions.

	* function.c (block_fragments_nreverse, blocks_nreverse_all): New
	functions.
	(reorder_blocks): Use blocks_nreverse_all instead of blocks_nreverse.
	(reorder_blocks_1): Assert BLOCK_FRAGMENT_ORIGIN is NULL.  Don't
	call block_nreverse here.
	(blocks_nreverse): Rename decl temporary to block.

From-SVN: r163292