(SF bug 763298).
The DB and DBEnv set_get_returns_none function was extended to take
- a level instead of a boolean flag. The new level 2 mans return None
- instead of raising an exception. This applies to set methods.
+ a level instead of a boolean flag. The new level 2 means that in
+ addition, cursor.set()/.get() methods return None instead of raising
+ an exception.
A typo was fixed in DBCursor.join_item(), preventing a crash.