ISPN-3264 Deprecate ByteArrayKey
ISPN-3243 Memcached flush_all should not have flags

* It should work just like Hot Rod's clear operation.
ISPN-3268 Move Equivalence API classes to their own package
ISPN-3192 Concurrent TreeCache.move() calls with the same destination lose data

Causes intermittent failures in NodeMoveAPIPessimisticTest.
Lock the destination node and the parent of the source node the first time
they are read (in pessimistic mode).