bpo-43271: Re-enable ceval.c optimizations for Windows debug builds (GH-24739)

Partially reverts commit b74396c

The optimizations are necessary to prevent the interpreter from
crashing in a number of tests involving recursion.

Author: db3l

Include/pyport.h

@@ -182,8 +182,9 @@ typedef int Py_ssize_clean_t;
  */
 
 #if defined(_MSC_VER)
-#  if defined(PY_LOCAL_AGGRESSIVE) && !defined(Py_DEBUG)
+#  if defined(PY_LOCAL_AGGRESSIVE)
    /* enable more aggressive optimization for MSVC */
+   /* active in both release and debug builds - see bpo-43271 */
 #  pragma optimize("gt", on)
 #endif
    /* ignore warnings if the compiler decides not to inline a function */

Python/ceval.c

@@ -7,6 +7,7 @@
    */
 
 /* enable more aggressive intra-module optimizations, where available */
+/* affects both release and debug builds - see bpo-43271 */
 #define PY_LOCAL_AGGRESSIVE
 
 #include "Python.h"