copyright: Change HP copyright on x86 code to be more friendly
X86: Add a common named flag for signed media operations.
X86: Implement the shuffle media instructions.
X86: Implement the insert/extract instructions.
X86: Implement the pack instructions.
X86: Rename sel to ext for media microops.
X86: Implement PUNPCKHDQ.
X86: Implement PUNPCKHWD.
X86: Implement PUNPCKHBW.
X86: Implement PUNPCKLDQ.
X86: Implement PUNPCKLWD.
X86: Implement the versions of PUNPCKLBW that use MMX registers.
X86: Put in stubs for x87, 64 bit and 128 bit SIMD instruction microcode.