* lisp/emacs-lisp/bytecomp.el (byte-compile-dynamic): Mark obsolete

See bug#11649 for an example problem, and emacs-devel discussion
«Prickliness of the "invalid byte code" stuff».

* lisp/wid-edit.el, lisp/wdired.el, lisp/vc/pcvs-util.el:
* lisp/progmodes/executable.el, lisp/mail/sendmail.el:
* lisp/emacs-lisp/cl-seq.el, lisp/emacs-lisp/cl-macs.el:
* lisp/emacs-lisp/cl-lib.el, lisp/emacs-lisp/cl-extra.el:
* lisp/dired-x.el, lisp/dired-aux.el, lisp/calendar/calendar.el:
Don't use byte-compile-dynamic any more.

lisp/emacs-lisp/bytecomp.el

@@ -240,6 +240,7 @@ For example, add  -*-byte-compile-dynamic: t;-*- on the first line.
 
 When this option is true, if you load the compiled file and then move it,
 the functions you loaded will not be able to run.")
+(make-obsolete-variable 'byte-compile-dynamic "not worthwhile any more." "27.1")
 ;;;###autoload(put 'byte-compile-dynamic 'safe-local-variable 'booleanp)
 
 (defvar byte-compile-disable-print-circle nil
@@ -1031,7 +1032,7 @@ If STR is something like \"Buffer foo.el\", return #<buffer foo.el>
     str))
 
 (defconst emacs-lisp-compilation-parse-errors-filename-function
-  'emacs-lisp-compilation-file-name-or-buffer
+  #'emacs-lisp-compilation-file-name-or-buffer
   "The value for `compilation-parse-errors-filename-function' for when
 we go into emacs-lisp-compilation-mode.")
 

lisp/emacs-lisp/cl-extra.el

@@ -938,7 +938,6 @@ Outputs to the current buffer."
 (run-hooks 'cl-extra-load-hook)
 
 ;; Local variables:
-;; byte-compile-dynamic: t
 ;; generated-autoload-file: "cl-loaddefs.el"
 ;; End:
 

lisp/emacs-lisp/cl-lib.el

@@ -660,8 +660,4 @@ of record objects."
    (t
     (advice-remove 'type-of #'cl--old-struct-type-of))))
 
-;; Local variables:
-;; byte-compile-dynamic: t
-;; End:
-
 ;;; cl-lib.el ends here

lisp/emacs-lisp/cl-macs.el

@@ -3397,7 +3397,6 @@ STRUCT and SLOT-NAME are symbols.  INST is a structure instance."
 (run-hooks 'cl-macs-load-hook)
 
 ;; Local variables:
-;; byte-compile-dynamic: t
 ;; generated-autoload-file: "cl-loaddefs.el"
 ;; End:
 

lisp/emacs-lisp/cl-seq.el

@@ -1038,7 +1038,6 @@ Atoms are compared by `eql'; cons cells are compared recursively.
 (run-hooks 'cl-seq-load-hook)
 
 ;; Local variables:
-;; byte-compile-dynamic: t
 ;; generated-autoload-file: "cl-loaddefs.el"
 ;; End: