configure.ac: Remove the configure check for _Bool, it is already done in the

top-level Python configure script.
configure, fficonfig.h.in: regenerated.

Modules/_ctypes/libffi/configure.ac

@@ -106,17 +106,6 @@ if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
 fi
 AC_SUBST(HAVE_LONG_DOUBLE)
 
-AC_MSG_CHECKING(for _Bool support)
-have_c99_bool=no
-AC_TRY_COMPILE([], [_Bool x; x = (_Bool)0;], [
-  AC_DEFINE(HAVE_C99_BOOL, 1, [Define this if you have the type _Bool.]) 
-  have_c99_bool=yes
-])
-AC_MSG_RESULT($have_c99_bool)
-if test "$have_c99_bool" = yes ; then
-AC_CHECK_SIZEOF(_Bool, 1)
-fi
-
 AC_C_BIGENDIAN
 AH_VERBATIM([WORDS_BIGENDIAN],
 [

Modules/_ctypes/libffi/fficonfig.h.in

@@ -28,9 +28,6 @@
    */
 #undef HAVE_AS_SPARC_UA_PCREL
 
-/* Define this if you have the type _Bool. */
-#undef HAVE_C99_BOOL
-
 /* Define if __attribute__((visibility("hidden"))) is supported. */
 #undef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
 
@@ -100,18 +97,15 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
-/* The size of a `double', as computed by sizeof. */
+/* The size of `double', as computed by sizeof. */
 #undef SIZEOF_DOUBLE
 
-/* The size of a `long double', as computed by sizeof. */
+/* The size of `long double', as computed by sizeof. */
 #undef SIZEOF_LONG_DOUBLE
 
-/* The size of a `_Bool', as computed by sizeof. */
-#undef SIZEOF__BOOL
-
 /* If using the C implementation of alloca, define if you know the
    direction of stack growth for your system; otherwise it will be
-   automatically deduced at run-time.
+   automatically deduced at runtime.
 	STACK_DIRECTION > 0 => grows toward higher addresses
 	STACK_DIRECTION < 0 => grows toward lower addresses
 	STACK_DIRECTION = 0 => direction of growth unknown */