Patch #505375: Make doc strings optional.
diff --git a/PC/pyconfig.h b/PC/pyconfig.h
index 081142f..893db43 100644
--- a/PC/pyconfig.h
+++ b/PC/pyconfig.h
@@ -481,6 +481,9 @@
    shared libraries */
 /* #undef WITH_DL_DLD */
 
+/* Define if you want documentation strings in extension modules */
+#define WITH_DOC_STRINGS 1
+
 /* Define if you want to compile in rudimentary thread support */
 /* #undef WITH_THREAD */