Added support for multi-algorithm CPU threads settings.

src/workers/Worker.h

@@ -37,7 +37,7 @@ class ThreadHandle;
 
 
 namespace xmrig {
-    class CpuThread;
+    class CpuThreadLegacy;
 }
 
 
@@ -62,7 +62,7 @@ protected:
     std::atomic<uint64_t> m_timestamp;
     uint64_t m_count;
     uint64_t m_sequence;
-    xmrig::CpuThread *m_thread;
+    xmrig::CpuThreadLegacy *m_thread;
 };