Rename last_basic_block_for_function to last_basic_block_for_fn.

Rename last_basic_block_for_function to last_basic_block_for_fn.

gcc/
	* basic-block.h (last_basic_block_for_function): Rename to...
	(last_basic_block_for_fn): ...this.

	* ipa-utils.c (ipa_merge_profiles): Update for renaming of
	last_basic_block_for_function to last_basic_block_for_fn.
	* lto-streamer-in.c (input_cfg): Likewise.
	* lto-streamer-out.c (output_cfg): Likewise.
	* tree-cfg.c (init_empty_tree_cfg_for_function): Likewise.
	* tree-sra.c (propagate_dereference_distances, ipa_early_sra):
	Likewise.

From-SVN: r205817