Update p5-DBM-Deep to 2.0008.

Changes from previous:
----------------------
2.0008 Jun 17 13:00:00 2012 PDT
    - Arrays and hashes retrieved from a database no longer create
      circular references (RT#77746).

2.0007 May 27 19:35:00 2012 PDT
    - Include one-line descriptions of each POD page after the name.
      Thanks to Yves Agostini for the patch and Gregor Herrmann for
      submitting it (RT#76378).
    - t/98_pod.t: Skip tests if Pod::Simple 3.21 is installed
      (RT#77419).

2.0006 Apr 1 17:15:00 2012 PDT
    - Er, try harder to get t/27_filehandle.t to work under TB2.

2.0005 Mar 25 13:05:00 2012 PDT
    - t/27_filehandle.t has been fixed again.
Updated databases/p5-DBM-Deep to 2.0008.