Remove message_access function and introduce better worded situation aware messages

There should be an effort to externalize all english text into default variables. It makes a great step towards true internatiolization. Does not cost anything in terms of performance or matainance. What it does do is make the code that uses hard coded strings open and more resuable. It adds the flexibility in phrasology that is necessary in internationalizing Drupal. It creates more usability in that better text instructions can be delivered to the user based on the situation of the process. I have made this slight change in my install which allows me to give a descriptive message based on the url tried. This can be done in both english and swedish without me having to use gettext and the like.

--- common_1.inc	2005-02-19 17:33:21.451910400 +0100
+++ common_2.inc	2005-02-19 17:34:40.876116800 +0100
@@ -427,8 +427,8 @@ function object2array($object) {
  * Always consider whether to use drupal_access_denied() instead to return a
  * proper (and customizable) 403 error.
  */
-function message_access() {
-  return t('You are not authorized to access this page.');
+function message_access($message = 'You are not authorized to access this page.') {
+  return t($message);
 }
 
 /**