backed out 648b42a75739, which was a NON-trivial whitespace commit.  It broke the Typography class's string replacements, for instance
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
index ea129ed..de75719 100644
--- a/system/libraries/Cache/drivers/Cache_apc.php
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -10,30 +10,30 @@
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 2.0
- * @filesource
+ * @filesource	
  */
 
 // ------------------------------------------------------------------------
 
 /**
- * CodeIgniter APC Caching Class
+ * CodeIgniter APC Caching Class 
  *
  * @package		CodeIgniter
  * @subpackage	Libraries
  * @category	Core
  * @author		ExpressionEngine Dev Team
- * @link
+ * @link		
  */
 
 class CI_Cache_apc extends CI_Driver {
 
 	/**
-	 * Get
+	 * Get 
 	 *
-	 * Look for a value in the cache. If it exists, return the data
+	 * Look for a value in the cache.  If it exists, return the data 
 	 * if not, return FALSE
 	 *
-	 * @param 	string
+	 * @param 	string	
 	 * @return 	mixed		value that is stored/FALSE on failure
 	 */
 	public function get($id)
@@ -43,8 +43,8 @@
 		return (is_array($data)) ? $data[0] : FALSE;
 	}
 
-	// ------------------------------------------------------------------------
-
+	// ------------------------------------------------------------------------	
+	
 	/**
 	 * Cache Save
 	 *
@@ -58,7 +58,7 @@
 	{
 		return apc_store($id, array($data, time(), $ttl), $ttl);
 	}
-
+	
 	// ------------------------------------------------------------------------
 
 	/**
@@ -90,7 +90,7 @@
 	 * Cache Info
 	 *
 	 * @param 	string		user/filehits
-	 * @return 	mixed		array on success, false on failure
+	 * @return 	mixed		array on success, false on failure	
 	 */
 	 public function cache_info($type = NULL)
 	 {
@@ -137,13 +137,13 @@
 			log_message('error', 'The APC PHP extension must be loaded to use APC Cache.');
 			return FALSE;
 		}
-
+		
 		return TRUE;
 	}
 
 	// ------------------------------------------------------------------------
 
-
+	
 }
 // End Class