ruby-net-ldap: new debian version 0.3.1-3 (fix FTBFS with ruby2.0 #720252)

[David Suárez <david.sephirot@gmail.com>]

Hi,

I have updated ruby-net-ldap to a new debian version.

Some comments:
  [ David Suárez ]
  * Fix failing tests on ruby2 (Closes: #720252)
  * Bump standards version to 3.9.4; no changes needed
  * Add 'copyright-should-refer-to-common-license-file-for-gpl'
      lintian override

  [ Cédric Boutillier ]
  * debian/control: remove obsolete DM-Upload-Allowed flag

  [ Ondřej Surý ]
  * Remove myself from Uploaders

It builds fine on a sid chroot.

Can anyone review and upload it.

Thanks,
  David