* Use cmake for building
* CMakeLists.txt modified to support full standalone build
* added support for ARCH=native builds
* added PowerPC flags
* added ARMv8 flags
* check for x86 AES-NI at compile time
* instruction decode/execute separated into class BytecodeMachine
* added randomx-tests project
* removed the use of non-portable __COUNTER__ macro
* removed the use of unsupported FENV_ACCESS pragma