Fix docstring quoting problems with ‘ '’

Problem reported by Artur Malabarba in:
http://lists.gnu.org/archive/html/emacs-devel/2015-11/msg01513.html
Most of these fixes are to documentation; many involve fixing
longstanding quoting glitches that are independent of the
recent substitute-command-keys changes.  The changes to code are:
* lisp/cedet/mode-local.el (mode-local-augment-function-help)
(describe-mode-local-overload):
Substitute docstrings before displaying them.
* lisp/emacs-lisp/cl-macs.el (cl--transform-lambda):
Quote the generated docstring for later substitution.

lisp/url/url-util.el

@@ -160,7 +160,7 @@ conversion.  Replaces these characters as follows:
 
 ;;;###autoload
 (defun url-normalize-url (url)
-  "Return a 'normalized' version of URL.
+  "Return a \"normalized\" version of URL.
 Strips out default port numbers, etc."
   (let (type data retval)
     (setq data (url-generic-parse-url url)
@@ -188,7 +188,7 @@ Will not do anything if `url-show-status' is nil."
 
 ;;;###autoload
 (defun url-get-normalized-date (&optional specified-time)
- "Return a 'real' date string that most HTTP servers can understand."
+ "Return a date string that most HTTP servers can understand."
  (let ((system-time-locale "C"))
   (format-time-string "%a, %d %b %Y %T GMT" specified-time t)))