Drop usage of test -e in configure as it is not portable.
Fixes #1439538
Will backport to 2.4
Also regenerate pyconfig.h.in.
diff --git a/Misc/NEWS b/Misc/NEWS
index efe6cff..9eeeff8 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -177,6 +177,11 @@
``test_uuid`` and ``test_email_codecs`` didn't actually run any tests when
run via ``regrtest.py``. Now they do.
+Build
+-----
+
+- Bug #1439538: Drop usage of test -e in configure as it is not portable.
+
What's New in Python 2.5 beta 2?
================================