Support cmov vectorization for float

JDK-8139340 has added vectorization support for double cmoves. Float support is a trivial extension which can piggyback on top of existing algorithm.

With such an enhancement, the following pattern can be supported:
{code}
private void cmove_kernel_float(float[] in1, float[] in2, int length, float[] out) {
  for (int i = 0; i < length; i++) {
    out[i] = (in1[i] > in2[i]) ? in1[i] : in2[i];
  }
}
{code}