recent troubles with float vectors & bitwise ops

[Paolo Bonzini]

> GCC makes the problem is even worse if only SSE and not SSE 2 instructions
> are enabled.  Since the integer bitwise instructions are only available
> with SSE 2, using casts instead of intrinsics causes GCC to expand the
> operation into a long series of instructions.

This was also a bug and a patch for this has been posted and approved.

Paolo