Add XXX note about Sleepycat's BSDDB.
diff --git a/README b/README
index 83ffdfa..fbea07e 100644
--- a/README
+++ b/README
@@ -570,6 +570,9 @@
Configuring the bsddb and dbm modules
-------------------------------------
+XXX Shouldn't this section be rewritten now that we use Sleepycat's
+BSDDB 4.0?
+
Configuring the bsddb module can sometimes be a bit tricky. This module
provides a Python interface to the Berkeley DB library. As of this writing
several versions of the underlying library are in common use (versions 1.85,