nortmalize path before adding it to the fscache to avoid multiple fscache entries for the same file

lib/filecache.php

@@ -62,6 +62,9 @@ class OC_FileCache{
 	 * $data is an assiciative array in the same format as returned by get
 	 */
 	public static function put($path,$data,$root=false) {
+		if ($path != '') {
+			$path = OC_Filesystem::normalizePath($path);
+		}
 		if($root===false) {
 			$root=OC_Filesystem::getRoot();
 		}