Update cryptopp from 8.1.0 to 8.2.0

[StrixG]

Summary

• Some bug fixes
• Update cryptopp from 8.1.0 to 8.2.0
• Changelog: https://www.cryptopp.com/release820.html

• Validation script (fetch and checkout on existing clone) (.txt)

I didn't include Test folders.

Changelog

8.2.0 - April 28, 2019

- minor release, no recompile of programs required
- expanded community input and support
  * 56 unique contributors as of this release
- use PowerPC unaligned loads and stores with Power8
- add SKIPJACK test vectors
- fix SHAKE-128 and SHAKE-256 compile
- removed IS_NEON from Makefile
- fix Aarch64 build on Fedora 29
- fix missing GF2NT_233_Multiply_Reduce_CLMUL in FIPS DLL
- add missing BLAKE2 constructors
- fix missing BlockSize() in BLAKE2 classes

Thanks @patrikjuvonen for the script.