Log Message:
Update p5-DBM-Deep from version 1.0023 to version 1.0025.

Upstream changes:
1.0025 Jun 6 12:46:00 2010 PDT
    (This version is compatible with 1.0024)
    - Fixed t/39_singletons.t to work on Windows.

1.0024 May 30 14:25:00 2010 PDT
    (This version is compatible with 1.0023)
    - Stale references (objects blessed into DBM::Deep::Null), which
      have always supposed to act like undef, now compare equal to
      undef, "" and 0. $stale_ref eq "" used to return \ 
false, even
      though "$stale_ref" was the empty string.
    - If you assign a stale reference to a database location,
      DBM::Deep now warns and assigns undef, instead of dying with
      obscure error messages.
    - Using a stale reference as a hash or array ref now causes an
      error with a more helpful message.