* cp-tree.h (build_shared_int_cst): New function.
	* call.c (build_over_call): Use DECL_VIRTUAL_CONTEXT, for clarity.
	* class.c (modify_vtable_entry): Likewise.
	(add_virtual_function): Split out code to generated shared
	INTEGER_CSTs to build_share_int_cst.
	(modify_all_vtables): Handle all the overridden functions here.
	Add overridden functions from non-primary virtual bases to the
	primary vtable.
	(finish_struct_1): Adjust call to modify_all_vtables.  Add
	overridden functions from non-primary bases to the vtable.
	* tree.c (build_shared_int_cst): New function.

From-SVN: r31476