Don't checkpoint the metadata on every schema operation if we are logging.
Detect at build time whether we need to load the snappy compression extension.
Add support for zlib compression to the RocksDB API.
The RocksDB Flush operation should only apply to a single table.  Fix it, and turn on periodic checkpoints by default so that log files can still be archived.
LSM should respect `bloom=false`.

refs #1105