[SCM] Debian packaging for nauty branch, master, updated. upstream/2.4-71-gc878296

[David Bremner]

The following commit has been merged in the master branch:
commit 6f5f82797abd40b220c0ca414bebda21f21f0b4d
Merge: decc4b96a4e6fc0099fe826eb75534a0409a9b32 669faec9708641250646576e98c2918e44949d78
Author: David Bremner <bremner at debian.org>
Date:   Tue Mar 13 08:24:07 2012 -0300

    Merge tag 'upstream/2.4r2'


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Debian packaging for nauty