bpo-35081: Move Py_BUILD_CORE code to internal/mem.h (GH-10249)
* Add #include "internal/mem.h" to C files using
_PyMem_SetDefaultAllocator().
* Include/internal/mem.h now requires Py_BUILD_CORE to be defined.
diff --git a/Python/import.c b/Python/import.c
index e761f65..338cd30 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -5,6 +5,7 @@
#include "Python-ast.h"
#undef Yield /* undefine macro conflicting with winbase.h */
#include "internal/hash.h"
+#include "internal/mem.h"
#include "internal/pystate.h"
#include "errcode.h"
#include "marshal.h"