The programmatic ExecutorConfig is now the same as the xml based on
added test for isEmpty method of collections
added test for paging predicate with indexed map
Null checks for MultiMap methods
client tests edited & generic null check method added
fixes #3178
added test for remove
fix checkstyle
Null checks for MultiMap methods
client tests edited & generic null check method added
Merge branch 'null-check-multimap' of https://github.com/buremba/hazelcast into null-check-multimap
moved tests to MapStoreTest
Added a separate delete method for RecordStore
renamed ValidationUtil.checkIfNull method
better renaming & cleanup
unit test for Semaphore

fixed failed test

cleaned code
small refactorings
add max size policy test for all kind of policies
Merge branch 'master' of https://github.com/hazelcast/hazelcast
add test category