ExecutionService improvements
MapStore changed to use single thread executor in order to prevent out of sync between MapStore and Map.
Update file for pr build.
update file for pr build
Merge branch 'master' of https://github.com/hazelcast/hazelcast
fix removal of registered executor for map store
Merge branch 'master' of https://github.com/hazelcast/hazelcast
Merge branch 'master' of https://github.com/hazelcast/hazelcast

Conflicts:
	hazelcast/src/main/java/com/hazelcast/concurrent/lock/LockServiceImpl.java
Merge pull request #1618 from eminn/master

MapStore changed to use single thread executor Edit