Log Message:
Update to 0.004007

Upstream changes:
0.004004  Sun Aug  5 17:46:56 2012

    - Further patch to failures.t

    - Added redefinition of Scalar::Util::blessed() to avoid nasty
      surprises (thanks Andrew!)

    - Added confess() and cluck() overrides
      and fixed caller() override to set @DB::args when appropriate

0.004005  Mon Aug 20 10:44:35 2012

    - Further patch for t/confess.t
      (Thanks, David!)

0.004006  Thu Oct  4 16:49:47 2012

    - Circumvented annoying undef-as-key warnings in Perl 5.17+

    - Honour @CARP_NOT's when reporting context

0.004007  Fri Oct  5 23:05:05 2012

    - Added BLESSED handler for better control over how blessed() lies

    - Upgraded reimplementation of blessed() to make more sense