-- v2: adsldp/tests: Add a test for opening schema as an ADs object. adsldp: Accept virtual objects in IADsOpenDSObject::OpenDSObject(). adsldp/tests: Add some tests for IADs::get_Schema(). activeds: Retry without ADS_SECURE_AUTHENTICATION for an AD path. adsldp: Fail to create IADs if it doesn't have an associated schema attribute. adsldp: Implement IADs::get_Schema().