* lisp/emacs-lisp/vtable.el (vtable-insert-object): Rename
argument AFTER-OBJECT to LOCATION; allow use of index to
refer to the insertion position; add argument BEFORE.
(Bug#70664).
* etc/NEWS:
* doc/misc/vtable.texi (Interface Functions): Document the
change.
* test/lisp/emacs-lisp/vtable-tests.el
(test-vtable-insert-object): New test.