Prefer defvar-keymap in emacs-lisp/*.el

Prefer defvar-keymap in emacs-lisp/*.el

* lisp/emacs-lisp/backtrace.el (backtrace-mode-map):
* lisp/emacs-lisp/bytecomp.el (emacs-lisp-compilation-mode-map):
* lisp/emacs-lisp/checkdoc.el (checkdoc-minor-mode-map):
* lisp/emacs-lisp/crm.el (crm-local-completion-map)
(crm-local-must-match-map):
* lisp/emacs-lisp/debug.el (debugger-mode-map):
* lisp/emacs-lisp/edebug.el (edebug-mode-map, edebug-global-map)
(edebug-eval-mode-map):
* lisp/emacs-lisp/eieio-custom.el (eieio-custom-mode-map):
* lisp/emacs-lisp/elp.el (elp-results-symname-map):
* lisp/emacs-lisp/lisp-mode.el (lisp-mode-shared-map):
* lisp/emacs-lisp/re-builder.el (reb-mode-map)
(reb-lisp-mode-map, reb-subexp-mode-map):
* lisp/emacs-lisp/tabulated-list.el (tabulated-list-mode-map)
(tabulated-list-sort-button-map):
* lisp/emacs-lisp/timer-list.el (timer-list-mode-map):