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).
ISPN-3268 test fixed after moving the Equivalence API classes to their own package
'Release Script: update versions for 5.3.1-SNAPSHOT'