GCOV: remove typedef for block_t

GCOV: remove typedef for block_t

2017-11-13  Martin Liska  <mliska@suse.cz>

	* gcov.c (struct block_info): Remove typedef for block_t.
	(struct line_info): Likewise.
	(line_info::has_block): Likewise.
	(EXIT_BLOCK): Likewise.
	(unblock): Likewise.
	(circuit): Likewise.
	(get_cycles_count): Likewise.
	(process_file): Likewise.
	(read_graph_file): Likewise.
	(solve_flow_graph): Likewise.
	(find_exception_blocks): Likewise.
	(add_line_counts): Likewise.
	(accumulate_line_info): Likewise.
	(output_line_details): Likewise.

From-SVN: r254677