* cp-tree.h (vcall_offset_in_vtable_p): New macro.
* class.c (build_vbase_offset_vtbl_entries): Fix typo in commment.
(struct vcall_offset_data_s): New type.
(dfs_vcall_offset_queue_p): New function.
(dfs_build_vcall_offset_vtbl_entries): Likewise.
(build_vcall_offset_vtbl_entries): Likewise.
(layout_vtable_decl): Likewise.
(num_vfun_entries): Likewise.
(num_extra_vtbl_entries): Add the entries for vcall offsets.
(build_vtbl_initializer): Likewise.
(dfs_finish_vtabls): Use layout_vtable_decl.
(modify_one_vtables): Always duplicate vtables under the new ABI.
(finish_struct_1): Use layout_vtable_decl.
From-SVN: r31619
