add list schema
Merge remote-tracking branch 'origin/v0.2' into zjw
Add SOTAuthenticator, UserAuthorityCheck PreEventContext, and default PreEventListener.
modify geoloc,eqroom ddl
DDLtest commit
modify ddl
Merge remote-tracking branch 'origin/caoruyi' into v0.2, OK.
Merge remote-tracking branch 'origin/zhuqihan' into v0.2, OK for DDL.
Fix the invalid import for MetaStoreConst.java
Merge remote-tracking branch 'origin/caoruyi' into v0.2, advanced fix for geoloc.
Merge zhuqihan's branch @ 9.22 20:30:56: modify ddl.
modify hive.java to make addGeoloc sucessfully
Test file create/close/rep/delete APIs, passed! Modify JDBC for user authentication; Fix SFile convertion NullPointer bug.
Merge remote-tracking branch 'origin/zjw' into v0.2, for list schema.
Fix unimplement RPC: find_best_nodes_in_groups.
modify geoloc modify,drop,show
Merge remote-tracking branch 'origin/zhuqihan' into v0.2, OK.
add geoloc
Merge remote-tracking branch 'origin/zhuqihan' into v0.2, add missing files.
Merge caoruyi's branch: remove geolocname.