Fix autoconfig and memory allocation for heavy algo.

src/Cpu.h

@@ -4,8 +4,8 @@
  * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
  * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
  * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
- * Copyright 2016-2017 XMRig       <support@xmrig.com>
- *
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2016-2018 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
  *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -28,6 +28,9 @@
 #include <stdint.h>
 
 
+#include "xmrig.h"
+
+
 class Cpu
 {
 public:
@@ -37,7 +40,7 @@ public:
         BMI2   = 4
     };
 
-    static int optimalThreadsCount(int algo, bool doubleHash, int maxCpuUsage);
+    static int optimalThreadsCount(xmrig::Algo algo, bool doubleHash, int maxCpuUsage);
     static void init();
     static void setAffinity(int id, uint64_t mask);