Importing netbsd cdb

[Joerg Sonnenberger]

On Wed, Nov 06, 2013 at 10:45:50AM +0200, Atte Peltomaki wrote:
> At least randomly googled third-party benchmarks suggest that CDB is
> vastly superior to BDB:
> http://www.dmo.ca/blog/benchmarking-hash-databases-on-large-data/

Please note that the term "CDB" is somewhat overloaded, e.g. there are a
number of completely different implementations and file formats.

Joerg