eieio: Emit compilation warnings a bit more thoroughly

eieio: Emit compilation warnings a bit more thoroughly

We used to warn about unknown slots only in `oref`: add the same check
for `oset` and `slot-boundp`.
Similarly, we warned about obsolete name args only when calling the
constructors: add the same check to `make-instance`.

* lisp/emacs-lisp/eieio-core.el (eieio--check-slot-name): New function
extracted from the compiler-macro of `eieio-oref`.
(eieio-oref, eieio-oset): Use it.
* lisp/emacs-lisp/eieio.el (slot-boundp): Use it.
 (eieio--constructor-macro): Add category to warning.
(make-instance): Add compiler-macro to warn about obsolete name.

(cherry picked from commit 71afa12941ebbd6fa2c010064de01db681985279)