Log Message:
Update to 6.4:

Version 6.4   07.03.2015

 +  Fixed t/f016.t, t/f027.t and t/f028.t which started failing on 01/01/2015
 +  Fixed t/f035.t which gave a warning "Unescaped left brace in regex is \ 
deprecated"
    with Perl 5.21.x