UPD: TestAuthCreateDatabase
UPD: TestAuthCreateDatabase

* Renamed test
* Implemented 'exists' test
* WIP #580
mattn/go-sqlite3,mattn/go-sqlite3,lyonel/go-sqlite3,xeodou/go-sqlcipher,mattn/go-sqlite3,xeodou/go-sqlcipher,xeodou/go-sqlcipher,lyonel/go-sqlite3,lyonel/go-sqlite3