copyright: Change HP copyright on x86 code to be more friendly
X86: Implement PANDN, ANDNPS, and ANDNPD.
X86: Implement PAND, ANDPS, and ANDPD.
X86: Implement POR, ORPD and ORPS.
X86: Implement PXOR.
X86: Put in stubs for x87, 64 bit and 128 bit SIMD instruction microcode.