cleanup of public api immutable schema , cleanup unused ocluster api, issue #3162
Merge branch 'develop' of github.com:orientechnologies/orientdb into develop
Merge pull request #3173 from thewall13/develop

Fixed issue #3172
Merge pull request #11 from orientechnologies/develop

Merge branch 'develop' of github.com:orientechnologies/orientdb into 'develop' of github.com:thewall13/orientdb