Add anycrc as a soft dependency in case ISA-L isn't available.
Plus we'll want it later: when we start writing down checksums,
we'll need it to combine per-part checksums for MPUs.
Like with crc32c, we won't provide any pure-python version as the
CPU-intensiveness could present a DoS vector. Worst case, we 501
as before.
Co-Authored-By: Tim Burke <tim.burke@gmail.com>
Signed-off-by: Tim Burke <tim.burke@gmail.com>
Change-Id: Ia05e5677a8ca89a62b142078abfb7371b1badd3f
Signed-off-by: Alistair Coles <alistairncoles@gmail.com>
404e1f2732