Add xmr-stak-cpu algo as experimental, use --av=5.

CMakeLists.txt

@@ -74,7 +74,6 @@ endif()
 include_directories(.)
 add_definitions(/DUSE_NATIVE_THREADS)
 add_definitions(/D_GNU_SOURCE)
-add_definitions(/DDEBUG_THREADS)
 
 if ("${CMAKE_BUILD_TYPE}" STREQUAL "")
     set(CMAKE_BUILD_TYPE Release)

algo/cryptonight/cryptonight.h

@@ -27,23 +27,19 @@
 #include <stddef.h>
 #include <stdint.h>
 
-#define MEMORY          (1 << 21) /* 2 MiB */
-#define MEMORY_M128I    (MEMORY >> 4) // 2 MiB / 16 = 128 ki * __m128i
+#define MEMORY          2097152 /* 2 MiB */
 #define ITER            (1 << 20)
 #define AES_BLOCK_SIZE  16
 #define AES_KEY_SIZE    32 /*16*/
 #define INIT_SIZE_BLK   8
 #define INIT_SIZE_BYTE  (INIT_SIZE_BLK * AES_BLOCK_SIZE) // 128
-#define INIT_SIZE_M128I (INIT_SIZE_BYTE >> 4) // 8
 
-#pragma pack(push, 1)
+
 union hash_state {
   uint8_t b[200];
   uint64_t w[25];
 };
-#pragma pack(pop)
 
-#pragma pack(push, 1)
 union cn_slow_hash_state {
     union hash_state hs;
     struct {
@@ -51,7 +47,6 @@ union cn_slow_hash_state {
         uint8_t init[INIT_SIZE_BYTE];
     };
 };
-#pragma pack(pop)
 
 
 struct cryptonight_ctx {