Update Digest-MD5 to CPAN version 2.53

  [DELTA]

  2013-07-02   Gisle Aas <gisle@ActiveState.com>

   Release 2.53

   Drop File::Spec dependency and don't override installation location
   for perl-5.12++

   Documentation tweaks.
Update MIME-Base64 to CPAN version 3.14

  [DELTA]

  2013-07-02   Gisle Aas <gisle@ActiveState.com>

   Release 3.14

   Install to 'site' instead of 'perl' when perl version is 5.12+