Use negative priorities to avoid special-casing the self-include

src/common/x64/cpu_detect.cpp

@@ -2,11 +2,11 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include "cpu_detect.h"
 #include <cstring>
 #include <string>
 #include <thread>
 #include "common/common_types.h"
+#include "cpu_detect.h"
 
 namespace Common {