X86 Specification

- Added semantics of: (V)PSRLDQ
- Bug fixes

- Added semantics of: (V)PSRAW, (V)PSRAD

- Added semantics of: (V)PSLLW, (V)PSLLD, (V)PSLLQ

- Added semantics of: (V)PSLLDQ

- Added semantics of: (V)PSIGNB, (V)PSIGNW, (V)PSIGND

- Added semantics of: (V)PSHUFW

- Added semantics of: (V)PSHUFLW

- Added semantics of: (V)PSHUFHW
- Added todo file for GDSL

- Added semantics of: (V)PSHUFD

- Finished to add semantics of: (V)PSHUFB

- Finished to add semantics of: (V)PSADBW

- Added semantics of: (V)POR

- Added semantics of: POPCNT

- Added semantics of: (V)PMULUDQ

- Added semantics of: (V)PMULLW

- Added semantics of: (V)PMULLD

- Added semantics of: (V)PMULHW

- Added semantics of: (V)PMULHUW

- Added semantics of: (V)PMULHRSW

- Added semantics of: (V)PMULDQ
- Added instruction test assembler file