Fix regexp bugs

* lisp/progmodes/idlwave.el (idlwave-make-tags):
* lisp/obsolete/mantemp.el (mantemp-insert-cxx-syntax):
Repair obviously over-escaped control characters.

lisp/obsolete/mantemp.el

@@ -152,7 +152,7 @@ the lines."
     (while (re-search-forward "^.+" nil t)
       (progn
 	(beginning-of-line)
-	(if (looking-at "struct[\\t ]+\\|class[\\t ]+")
+	(if (looking-at "struct[\t ]+\\|class[\t ]+")
 	    (insert "template ")
 	  (insert "template class "))))
     (goto-char (point-min))

lisp/progmodes/idlwave.el

@@ -3891,7 +3891,7 @@ you specify /."
 	    (while (and item)
 	      ;;
 	      ;; Call etags
-	      (if (not (string-match "^[ \\t]*$" item))
+	      (if (not (string-match "^[ \t]*$" item))
 		  (progn
 		    (message "%s" (concat "Tagging " item "..."))
 		    (setq errbuf (get-buffer-create "*idltags-error*"))