in configure.ac, enable SIV only if !ENABLED_FIPS or if building FIPS v5-dev;
in cmac.{c,h}, remove !HAVE_FIPS gating on ShiftAndXorRb().
in configure.ac, enable SIV only if !ENABLED_FIPS or if building FIPS v5-dev;
in cmac.{c,h}, remove !HAVE_FIPS gating on ShiftAndXorRb().