Compile cleanup

This is to avoid getting stuck on the same IP which doesn't work for whatever reason.

pool.supportxmr.com uses DNS for load balancing, and it had issues with xmr-stak miners when one of the servers went down and all xmr-stak miners that were on that server didn't switch to the other working server. This change fixes the bug.

Slight keccak optimization

AES override feature

CMake: change GCC to g++ warning

HWLOC allocation algorithm cleanup

fix wrong cache method

- fix wrong implemented method `isCacheExclusive()`
- round up number of hashes if >= 1 MiB cache is available

fix rewrite of the hwloc autosuggestion

- fix exclusive cache detection
- fix usage of wrong cache size

Fix handling of stratum+tcp:// format

Added instructions for building on FreeBSD

Appveyor fix

* Handle memset not in scope error in Alpine compiler

fix auto suggestion for 64+ cores

Changing "Copy&Paste" output line to be easily parsable (showing BEGIN / END)

use native hwloc bitmap to find hardware cores

Add appveyor initial file