Adds basic support for BerkeleyDB 4.2.x.  Compiles and passes tests; new
features in BerkeleyDB not exposed.  notably: the DB_MPOOLFILE interface
has not yet been wrapped in an object.

Adds support for building and installing bsddb3 in python2.3 that has
an older version of this module installed as bsddb without conflicts.
The pybsddb.sf.net build/packaged version of the module uses a
dynamicly loadable module called _pybsddb rather than _bsddb.
diff --git a/Lib/bsddb/__init__.py b/Lib/bsddb/__init__.py
index 6b4f965..4671acc 100644
--- a/Lib/bsddb/__init__.py
+++ b/Lib/bsddb/__init__.py
@@ -33,11 +33,18 @@
 #----------------------------------------------------------------------
 
 
-"""Support for BerkeleyDB 3.1 through 4.1.
+"""Support for BerkeleyDB 3.2 through 4.2.
 """
 
 try:
-    import _bsddb
+    if __name__ == 'bsddb3':
+        # import _pybsddb binary as it should be the more recent version from
+        # a standalone pybsddb addon package than the version included with
+        # python as bsddb._bsddb.
+        import _pybsddb
+        _bsddb = _pybsddb
+    else:
+        import _bsddb
 except ImportError:
     # Remove ourselves from sys.modules
     import sys