Create the dbm package from PEP 3108. #2881.
diff --git a/Lib/dbm/gnu.py b/Lib/dbm/gnu.py
new file mode 100644
index 0000000..b07a1de
--- /dev/null
+++ b/Lib/dbm/gnu.py
@@ -0,0 +1,3 @@
+"""Provide the _gdbm module as a dbm submodule."""
+
+from _gdbm import *