Fix ctor vtable vcall offsets.

Fix ctor vtable vcall offsets.

cp:
	Fix ctor vtable vcall offsets.
	* class.c (struct vtbl_init_data_s): Add rtti_binfo member.
	(build_rtt_vtbl_entries): Lose RTTI_BINFO parameter.
	(get_matching_base): Remove.
	(get_original_base): New function.
	(build_vtbl_initializer): Initialize vid.rtti_binfo.
	Use a virtual thunk for a ctor vtable with an index
	(add_vcall_offset_vtbl_entries_1): Check if binfo has lost a
	primary base within a constructor vtable. Only set
	BV_VCALL_INDEX when not a constructor vtable. Adjust vcall offset
	when primary base has been lost.
	* cp-tree.h (BINFO_VIRTUALS): Remove ambiguity from comment.
testsuite:
	* g++.old-deja/g++.abi/vtable3.h: Check vcall offsets too.

From-SVN: r40090