Maximize speed of compression, not size.
Maximize speed of compression, not size.

In many cases, I saw this produced a difference of less than 2% in
the final output file size.  Performance-wise, this is about twice
as fast as Z_BEST_COMPRESSION.

At all settings, this is the slowest part of conversion for every
data set I've tried.

git-svn-id: 353be9ac11a1e711854a13efcc2fc17d9d6b83e7@1912 c36c8488-0289-0348-9b64-b301f74bd9a7

BlueBrain/Tuvok,BlueBrain/Tuvok,BlueBrain/Tuvok