Disable tests on 32-bit ARM until upstream can diagnose a failure.
    
    -Add upstream patches to fix bugs discovered after release:
      -fmpq-poly-add-fmpq.patch, -nmod-mpolyn-interp-crt-lg-poly.patch,
      -fmpz-mpoly-div-monagan-pearce.patch, -fmpz-poly-factor.patch,
      -fmpz-mod-poly-gcdiv-euclidean.patch.