RandomX: added huge-pages-jit config parameter

Set to false by default, gives 0.2% boost on Ryzen 7 3700X with 16 threads, but hashrate might be unstable on Ryzen between launches. Use with caution.

src/crypto/common/MemoryPool.h

@@ -54,6 +54,7 @@ protected:
 private:
     size_t m_refs           = 0;
     size_t m_offset         = 0;
+    size_t m_alignOffset    = 0;
     VirtualMemory *m_memory = nullptr;
 };