gv.el and cl-macs.el: Fix bug#57397

* lisp/emacs-lisp/gv.el (gv-get): Obey symbol macros.
* lisp/emacs-lisp/cl-macs.el (cl--letf): Remove workaround placed to
try and handle symbol macros.

* test/lisp/emacs-lisp/cl-macs-tests.el (cl-macs-test--symbol-macrolet):
Add new testcase.

lisp/emacs-lisp/cl-macs.el

@@ -2762,7 +2762,7 @@ Each PLACE may be a symbol, or any generalized variable allowed by `setf'.
                            (funcall setter vold)))
                        binds))))
     (let* ((binding (car bindings))
-           (place (macroexpand (car binding) macroexpand-all-environment)))
+           (place (car binding)))
       (gv-letplace (getter setter) place
         (macroexp-let2 nil vnew (cadr binding)
           (if (symbolp place)

lisp/emacs-lisp/gv.el

@@ -87,7 +87,11 @@ with a (not necessarily copyable) Elisp expression that returns the value to
 set it to.
 DO must return an Elisp expression."
   (cond
-   ((symbolp place) (funcall do place (lambda (v) `(setq ,place ,v))))
+   ((symbolp place)
+    (let ((me (macroexpand-1 place macroexpand-all-environment)))
+      (if (eq me place)
+          (funcall do place (lambda (v) `(setq ,place ,v)))
+        (gv-get me do))))
    ((not (consp place)) (signal 'gv-invalid-place (list place)))
    (t
     (let* ((head (car place))