[Polyworld-cvs] fix DebugBrainGrow

[sean <ri...@us...>]

Log Message:
-----------
fix DebugBrainGrow

Modified Files:
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    polyworld/agent:
        Retina.cp (r1.6 -> r1.7)
    polyworld/brain/groups:
        GroupsBrain.cp (r1.2 -> r1.3)