Add common hash/checksum functions

- SipHash64, SipHash128
 - Crc32 (fast + small variants)
 - Adler32
 - Fnv1a (32, 64 and 128 bit variants)
c34ce2cbc6Marc Tiehuis committed on 4/6/2018, 11:10:54 AMparent873641c
7 files changedLine totals unavailable