lto.c (enum gtc_mode): Remove.

2012-09-11  Richard Guenther  <rguenther@suse.de>

	* lto.c (enum gtc_mode): Remove.
	(struct type_pair_d): Adjust.
	(lookup_type_pair): Likewise.
	(gimple_type_leader): Do not mark as deletable.
	(gimple_lookup_type_leader): Adjust.
	(gtc_visit): Likewise.
	(gimple_types_compatible_p_1): Likewise.
	(gimple_types_compatible_p): Likewise.
	(gimple_type_hash): Likewise.
	(gimple_register_type): Likewise.
	(read_cgraph_and_symbols): Manage lifetime of tables
	here.

From-SVN: r191184