backed out 648b42a75739, which was a NON-trivial whitespace commit.  It broke the Typography class's string replacements, for instance
diff --git a/application/config/constants.php b/application/config/constants.php
index edaefe8..4a879d3 100644
--- a/application/config/constants.php
+++ b/application/config/constants.php
@@ -1,4 +1,4 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 
 /*
 |--------------------------------------------------------------------------
@@ -6,10 +6,10 @@
 |--------------------------------------------------------------------------
 |
 | These prefs are used when checking and setting modes when working
-| with the file system. The defaults are fine on servers with proper
+| with the file system.  The defaults are fine on servers with proper
 | security, but you may wish (or even need) to change the values in
 | certain environments (Apache running a separate process for each
-| user, PHP under CGI with Apache suEXEC, etc.). Octal values should
+| user, PHP under CGI with Apache suEXEC, etc.).  Octal values should
 | always be used to set the mode correctly.
 |
 */