Context variable available in UPDATE SET syntax.Since now UPDATE X SET Link=$var is possible
Graph API: fixed typo on warn message
Null values index binary compatibility issue was found.
Blueprints: fixed problem with query against vertices filtering labels in tx
Fixed issue #2277 about client network mgmt

Rewritten network management from client side. No more ring based pool
but the stable OResourcePool class. Now all the connections are managed
in a central place: ORemoteConnectionManager singleton instance
accessible from OEngineRemote instance.
Merge remote-tracking branch 'upstream/develop' into develop
added a new api to lookup composite index
Merge pull request #2287 from maggiolo00/develop

added a new api to lookup composite index
Merge remote-tracking branch 'upstream/develop' into develop
Fix possible NPE
Merge remote-tracking branch 'origin/develop' into develop
Issue #2276. OChainedIndexProxy: Improve non composite index usage.
Issue #2276. OChainedIndexProxy: Allow to use non composite hash index.
Issue #2276. SQL Select. Search for indexes. remove code duplication.
Minor: refactoring
Minor: refactoring
Issue #2276. SQL Select. Refactoring of: Index existence
Issue #2276. SQL Select. Search for indexes. remove code duplication.
Minor: refactoring
First step to get working sharing on query. Simplified also the internal management of distributed cfg