Merge pull request #1 from orientechnologies/develop

Merge changes from orientechnologies.
For OSGi usage, the orient-graphdb bundle must now indicate that it
exports the com.tinkerpop.blueprints.impls.orient package.
Merge pull request #2051 from w3aponx/develop

Missing OSGi export of com.tinkerpop.blueprints.impls.orient in orientdb-graphdb bundle