Merge branch '2.0' into 3.0

phpseclib/File/ASN1.php

@@ -132,6 +132,16 @@ abstract class ASN1
      */
     private static $encoded;
 
+    /**
+     * Current Location of most recent ASN.1 encode process
+     *
+     * Useful for debug purposes
+     *
+     * @var array
+     * @see self::encode_der()
+     */
+    var $location;
+
     /**
      * Type mapping table for the ANY type.
      *