Update the config file handler to change the way that the configuration
archive is maintained.  Rather than keeping the archive as a single zip file,
it is now maintained as a directory of gzip-compressed files.  This is much
faster and more scalable.  On my desktop machine, it reduces the time to run
unit tests by about 75% (from about 7.5 minutes to less than 2 minutes).

OpenDS Issue Number:  1115