Simplify rtti, now we've only one ABI.

Simplify rtti, now we've only one ABI.

	* cp-tree.h (cp_tree_index): Remove CPTI_TINFO_DECL_ID,
	CPTI_TINFO_VAR_ID.
	(tinfo_decl_id, tinfo_var_id): Remove.
	(get_typeid_1): Remove.
	* rtti.c
	(init_rtti_processing): Remove tinfo_decl_id & tinfo_var_id.
	(typeid_ok_p): New function.
	(build_type_id): Call typeid_ok_p. Don't call tinfo_from_decl.
	(get_tinfo_decl): Remove old abi documentation.
	(tinfo_from_decl): Remove.
	(get_type_id): Call typeid_ok_p. Absorb get_typeid_1.
	(get_typeid_1): Remove.
	(get_base_offset): Remove.
	(synthesize_tinfo_var): Absorb get_base_offset.
	(create_real_tinfo_var): Don't use tinfo_decl_id.

From-SVN: r44291