CRC32 hash with x64 optimizations

This package is a drop-in replacement for the standard library
hash/crc32 package, that features SSE 4.2 optimizations on x64
platforms, for a 10x speedup.

WWW: https://github.com/klauspost/crc32

- While I'm here:
  - Use DISTVERSIONPREFIX
  - Add LICENSE_FILE
  - Add missing RUN_DEPENDS
  - Remove GH_PROJECT

PR:		217211
Submitted by:	Guy Tabrar <guy.tabrar@me.com>