Reinstate a couple of "pub use"'s

These were accidentally removed in
e34692948e

src/lib.rs

@@ -14,7 +14,7 @@
 //
 extern crate rocksdb_sys;
 pub use rocksdb_sys::rocksdb_ffi as rocksdb_ffi;
-pub use rocksdb_ffi::{DBCompactionStyle, DBComparator, new_bloom_filter};
+pub use rocksdb_ffi::{DBCompactionStyle, DBComparator, DBCompressionType, DBRecoveryMode, new_bloom_filter};
 pub use rocksdb::{DB, DBIterator, DBVector, Direction, IteratorMode, Writable,
                   WriteBatch, Error};
 pub use rocksdb_options::{BlockBasedOptions, Options, WriteOptions};