Get rid of MSVC's __int64

Use either int64_t, uint64_t or long long and unsigned long long, defined as per C++11 standard

Minecraft.World/EnchantmentMenu.h

@@ -23,7 +23,7 @@ private:
 	bool m_costsChanged; // 4J Added
 
 public:
-	__int64 nameSeed;
+	int64_t nameSeed;
 
 public:
 	int costs[3];