Prefer defvar-keymap in several cases

* lisp/calc/calc-embed.el (calc-override-minor-modes-map):
* lisp/calc/calc-yank.el (calc-edit-mode-map):
* lisp/calc/calc.el (calc-trail-mode-map):
* lisp/cedet/semantic/mru-bookmark.el (semantic-mru-bookmark-mode-map):
* lisp/cedet/semantic/util-modes.el (semantic-highlight-edits-mode-map)
(semantic-show-unmatched-syntax-mode-map)
(semantic-show-parser-state-mode-map)
(semantic-stickyfunc-mode-map, semantic-highlight-func-mode-map):
* lisp/cedet/srecode/srt-mode.el (srecode-template-mode-map):
* lisp/gnus/gnus-art.el (gnus-prev-page-map, gnus-next-page-map):
* lisp/gnus/gnus-search.el (gnus-search-minibuffer-map):
* lisp/gnus/score-mode.el (gnus-score-mode-map):
* lisp/gnus/smime.el (smime-mode-map):
* lisp/indent.el (edit-tab-stops-map):
* lisp/isearch.el (minibuffer-local-isearch-map):
* lisp/printing.el (pr-interface-map):
* lisp/progmodes/prog-mode.el (prog-mode-map):
* lisp/progmodes/subword.el (subword-mode-map):
* lisp/reveal.el (reveal-mode-map):
* lisp/strokes.el (strokes-mode-map):
* lisp/textmodes/flyspell.el (flyspell-mouse-map):
* lisp/textmodes/less-css-mode.el (less-css-mode-map):
* lisp/textmodes/remember.el (remember-mode-map)
(remember-notes-mode-map):
* lisp/wid-browse.el (widget-browse-mode-map):
* lisp/wid-edit.el (widget-key-sequence-map): Prefer defvar-keymap in
some easy-to-convert cases.

lisp/textmodes/less-css-mode.el

@@ -209,10 +209,8 @@ directory by default."
     (modify-syntax-entry ?. "'" st)
     st))
 
-(defvar less-css-mode-map
-  (let ((map (make-sparse-keymap)))
-    (define-key map "\C-c\C-c" #'less-css-compile)
-    map))
+(defvar-keymap less-css-mode-map
+  "C-c C-c" #'less-css-compile)
 
 ;;;###autoload (add-to-list 'auto-mode-alist '("\\.less\\'" . less-css-mode))
 ;;;###autoload