MPolynomial_libsingular.factor does not set units

[burcin]

MPolynomial_libsingular.factor does not set units.

We now have

sage: R.<x,y,z> = QQ[]
sage: p = -1*(x*y+z)  
sage: F = p.factor(); F
(-1) * (x*y + z)
sage: F.unit()
1
sage: len(F)
2

It should be

sage: F = p.factor(); F
x*y + z
sage: F.unit()
-1
sage: len(F)
1

Component: commutative algebra

Issue created by migration from https://trac.sagemath.org/ticket/2408

[burcin]

comment:1

This works on 2.10.2, I was using 2.10 at the time. Sorry for the noise.