applied patch from Mark Vakoc to simplify his work from CVS checkouts.

* win32/configure.js: applied patch from Mark Vakoc to simplify
  his work from CVS checkouts.
Daniel
diff --git a/win32/configure.js b/win32/configure.js
index 0fea108..4612879 100644
--- a/win32/configure.js
+++ b/win32/configure.js
@@ -561,6 +561,11 @@
 // Create the config.h.
 var confighsrc = "..\\include\\win32config.h";
 var configh = "..\\config.h";
+var f = fso.FileExists(configh);
+if (f) {
+	var t = fso.GetFile(configh);
+	t.Attributes =0;
+}
 fso.CopyFile(confighsrc, configh, true);
 WScript.Echo("Created config.h.");