- fixing beta computation in THREE_D algo when beta!=0 - fix seg fault in fgemm when computing H.parseq.numthreads (threshold)
- fixing beta computation in THREE_D algo when beta!=0
- fix seg fault in fgemm when computing H.parseq.numthreads (threshold)

linbox-team/fflas-ffpack,linbox-team/fflas-ffpack,linbox-team/fflas-ffpack