fold CYTHON_USE_PYLONG_INTERNALS feature macro into the same initialisation section as the others

Cython/Utility/ModuleSetupCode.c

@@ -43,6 +43,8 @@
   #define CYTHON_USE_PYLIST_INTERNALS 0
   #undef CYTHON_USE_UNICODE_INTERNALS
   #define CYTHON_USE_UNICODE_INTERNALS 0
+  #undef CYTHON_USE_PYLONG_INTERNALS
+  #define CYTHON_USE_PYLONG_INTERNALS 0
   #undef CYTHON_AVOID_BORROWED_REFS
   #define CYTHON_AVOID_BORROWED_REFS 1
   #undef CYTHON_ASSUME_SAFE_MACROS
@@ -63,6 +65,12 @@
   #elif !defined(CYTHON_USE_ASYNC_SLOTS)
     #define CYTHON_USE_ASYNC_SLOTS 1
   #endif
+  #if PY_VERSION_HEX < 0x02070000
+    #undef CYTHON_USE_PYLONG_INTERNALS
+    #define CYTHON_USE_PYLONG_INTERNALS 0
+  #elif !defined(CYTHON_USE_PYLONG_INTERNALS)
+    #define CYTHON_USE_PYLONG_INTERNALS 1
+  #endif
   #ifndef CYTHON_USE_PYLIST_INTERNALS
     #define CYTHON_USE_PYLIST_INTERNALS 1
   #endif
@@ -83,9 +91,6 @@
   #endif
 #endif
 
-#if !defined(CYTHON_USE_PYLONG_INTERNALS) && CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x02070000
-  #define CYTHON_USE_PYLONG_INTERNALS 1
-#endif
 #if CYTHON_USE_PYLONG_INTERNALS
   #include "longintrepr.h"
   /* These short defines can easily conflict with other code */