add XOR strcmp (scalar and SSE4.2) add checks that we really only have a zero-byte or zero-short at the very last position
add XOR strcmp (scalar and SSE4.2)
add checks that we really only have a zero-byte or zero-short at the very last position

Signed-off-by: Till Kolditz <7b85ceac831024ffa0d5e713226b8993369853f4@gmail.com>

tuddbresilience/coding_benchmark,tuddbresilience/coding_benchmark