Add note about what Paul Hargrove discovered abotu g96 on the NetBSD-6
AMD64 platforms:

    http://www.open-mpi.org/community/lists/devel/2014/01/13748.php

cmr=v1.7.4:reviewer=rhc:subject=README update for g95+NetBSD-6+AMD64
Open/close the RTE framework

cmr=v1.7.4:reviewer=hjelmn