And deprecated aliases for the the no namespaced classes.
ReplicatedBagOStuff that already is deprecated isn't moved.
Bug: T353458
Change-Id: Ie01962517e5b53e59b9721e9996d4f1ea95abb51
Create a simple APCUBagOStuff subclass and also fix
APCUBagOStuff::incrWithInit() default $init value.
Change-Id: If84963fe7dcfedd6edebfb8785235263e0868ece