Summary:
This also removes the obsolete names BackupableDBOptions
and UtilityDB. API users must now use BackupEngineOptions and
DBWithTTL::Open. In C API, `rocksdb_backupable_db_*` is replaced
`rocksdb_backup_engine_*`. Similar renaming in Java API.

In reference to https://github.com/facebook/rocksdb/issues/9389

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9438

Test Plan: CI

Reviewed By: mrambacher

Differential Revision: D33780269

Pulled By: pdillinger

fbshipit-source-id: 4a6cfc5c1b4c78bcad790b9d3dd13c5fdf4a1fac