Fix curved quotes in a few places

* lisp/calc/calc-misc.el (calc-help): Fix quoting.
The strings in question are not doc strings, so this partially
undoes the recent change that assumed they were doc strings.
* lisp/cedet/srecode/srt-mode.el (srecode-macro-help):
* lisp/info.el (Info-finder-find-node):
Use curved quotes.
* lisp/emacs-lisp/derived.el (derived-mode-make-docstring):
Also allow curved quotes in doc strings.

lisp/emacs-lisp/derived.el

@@ -331,7 +331,8 @@ which more-or-less shadow%s %s's corresponding table%s."
 			"\n\nThis mode "
 		      (concat
 		       "\n\nIn addition to any hooks its parent mode "
-		       (if (string-match (regexp-quote (format "`%s'" parent))
+		       (if (string-match (regexp-quote (format "[`‘]%s['’]"
+                                                               parent))
 					 docstring) nil
 			 (format "`%s' " parent))
 		       "might have run,\nthis mode "))