Log Message:
Update p5-Module-Signature from version 0.61 to version 0.63.

Upstream changes:
[Changes for 0.63 - Sun, 28 Mar 2010 04:46:27 +0100]

* Fix diagnostic message from Makefile.PL when the user dosn't have gnupg or
  Crypt::OpenPGP (miyagawa).

[Changes for 0.62 - Tue, 23 Mar 2010 22:17:39 +0100]

* Change the default keyserver from the outdated pgp.mit.edu to
  pool.sks-keyservers.net.