Enable to configure and use the loopback multicast sockets (issue hazelcast/hazelcast#2594).
Update the XML configuration generator and builder, related to issue #2594.
Add unit tests related to the issue #2594.
Fixing the unit test of the multicast loopback mode.
Cleaning the code of the MulticastLoopbackModeTest class according to the recommendations of the Hazelcast's development team.
Resolve conflicts with the master branch
Fixing the style of the code.

According to the errors found by the code style checker, the code of the
multicast loopback feature is fixed.
cache recordstore eviction impl
checkstyle fix
added partitionId to client event packet for event ordering at client-side
checkstyle
map store initialization refactored
use writable map config
refactoring fixes
refactor on cacherecordstore and cacherecord
Merge remote-tracking branch 'origin/master' into feature/master/jcache_road_to_release_from_ea_for_3_4
eviction statistics impl on cacherecordstore
store operation should be retried and done eventually after a temporary map store failure
removed completion-listener
checkstyle