[X86] Add intrinsics for kand/kandn/knot/kor/kxnor/kxor with 8, 32, and 64-bit mask registers.

This also adds a second intrinsic name for the 16-bit mask versions.

These intrinsics match gcc and icc. They just aren't published in the Intel Intrinsics Guide so I only recently found they existed.

llvm-svn: 340719