ISPN-2753 Drop Staxmapper dependency from LevelDB cachestore
ISPN-3263 Add a 5.3 parser and XSD to the LevelDB cachestore
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).
ISPN-3268 test fixed after moving the Equivalence API classes to their own package
ISPN-2840 Conditional operations don't work concurrently for transactional caches with write skew check enabled

Each transaction keeps a map between key and version that is populated on the first access.
This maps contains the version seen by the transaction and it is attached to the prepare
to perform the write skew check in the remote nodes.
Added test cases to check if the write skew check is working correctly with IGNORE_RETURN_VALUE
flag.
Removed the previousRead boolean from the write operation.