Upgraded to Hazelcast 3.0.2
Fix NullPointerException with setShortName(null)
(cherry picked from commit 8a9c5f8)
Fix exception with setShortName("") (empty string)
Merge pull request #1662 from Volune/fix_set_shortname_null

Fix exceptions in OClassImpl.setShortName
Merge pull request #1662 from Volune/fix_set_shortname_null

Fix exceptions in OClassImpl.setShortName
Deprecated OGraphDatabase class
Merged conflicts
Fixed issue #1664: Context has no parent in sun queries executed in LET clause
Merge branch 'sbtree' into develop
Check sum test fix.
Fixed bug on fetch plan used in commands: sub-records haven't the @rid, @class and @version meta-fields
Automatic MRBTree fallback was implemented.
SBTreeInsertion test was modified to reflect last code changes.
Merge branch 'develop' of https://github.com/orientechnologies/orientdb into develo
Fixed issue #1668: Introduce new SQL targets to query metadata
Fixed issue #1639: Login to New Database in OrientDB Studio Does Not Accept Credentials

When the server recognizes the same session is trying to be reused for
another database, invalidate the session, so further login works.
Fixed bug on Hazelcast members where the IP address can't be retrieved (using hostnames)
Fixed issue #1667: Cannot restart embedded server
SBTree NPE fix reported in https://groups.google.com/forum/#!topic/orient-database/8o3dhRrq3v0
Merge branch 'develop' of https://github.com/orientechnologies/orientdb into develop