Update to orientdb 1.7.5
[NX-542] Update capabilities support-zip support to export the database.
[NX-542] Add backup/export and export/import functions.  Update capabilities support-zip support to export the database.
[NX-542] Implement suport to restore database if standard export file exists.
[NX-542] Add export and restore options to manager
[NX-519] Add simple encrypted rid obfuscator.  Add basic tests for hex and encrypted obfuscators.
[NX-518] Convert capabilities to document-api and use database manager.
[NX-518] initial database manager facade, to simplify access to document database connections and pools
Add in-memory database manager
Explicit binding for default impl
Merge pull request #624 from sonatype/in-memory-database-manager

REVIEW: Add in-memory database manager
Merge remote-tracking branch 'origin/master' into NX-526-timeline-orientdb-master
NX-526: Using DBManager and removed hacks for pre-1.7.5 OrientDB