Update clapack_gesv spec to work with rationals also.
Update clapack_gesv spec to work with rationals also.

wlevine/nmatrix,johnmarinelli/nmatrix,johnmarinelli/nmatrix,janusnic/nmatrix,agisga/nmatrix,wlevine/nmatrix,thisMagpie/nmatrix,thisMagpie/nmatrix,wlevine/nmatrix,agisga/nmatrix,agisga/nmatrix,janusnic/nmatrix,thisMagpie/nmatrix,janusnic/nmatrix,johnmarinelli/nmatrix,agisga/nmatrix,wlevine/nmatrix,johnmarinelli/nmatrix,janusnic/nmatrix,thisMagpie/nmatrix