Address Nathan's review

Author: vstinner

Modules/_testlimitedcapi.c

@@ -10,8 +10,8 @@
 #ifdef Py_GIL_DISABLED
    // FIXME: use the Py_TARGET_ABI3T
 #else
-   // Need limited C API version 3.13 for Py_MOD_GIL_NOT_USED
-#  define Py_LIMITED_API 0x030d0000
+   // Use the oldest limited C API version
+#  define Py_LIMITED_API 0x03020000
 #endif
 
 #include "_testlimitedcapi/parts.h"

Modules/_testlimitedcapi/version.c

@@ -4,7 +4,7 @@
 #ifdef Py_GIL_DISABLED
 #  define Py_TARGET_ABI3T 0x030f0000
 #else
-   // API added in 3.14
+   // Need limited C API version 3.14 for Py_PACK_VERSION()
 #  define Py_LIMITED_API 0x030e0000
 #endif