liblzma: Add lzma_memcmplen() for fast memory comparison.

This commit just adds the function. Its uses will be in
separate commits.

This hasn't been tested much yet and it's perhaps a bit early
to commit it but if there are bugs they should get found quite
quickly.

Thanks to Jun I Jin from Intel for help and for pointing out
that string comparison needs to be optimized in liblzma.

0 files changed, 0 insertions, 0 deletions