[testbench.cpp] added examples from https://gforge.inria.fr/tracker/?func=detail&atid=7442&aid=21649&group_id=2065
[testbench.cpp] added examples from https://gforge.inria.fr/tracker/?func=detail&atid=7442&aid=21649&group_id=2065

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs