If you have group NAMES containing "All" or "Known" or
"Trusted", they behaved wrong until now (they erroneously
included All/Known/Trusted users even if you did not list
them as members), but will start working correctly with this
changeset.
E.g. AllFriendsGroup:
AllFriendsGroup will now (correctly) include only JoeDoe.
It (erroneously) contained all users (including JoeDoe)
before.
E.g. MyTrustedFriendsGroup:
MyTrustedFriendsGroup will now (correctly) include only
JoeDoe. It (erroneously) contained all trusted users and
JoeDoe before.