author = new PersonIdent(author, now, tz);
committer = new PersonIdent("J. Committer", "jcommitter@example.com");
committer = new PersonIdent(committer, now, tz);
final WindowCacheConfig c = new WindowCacheConfig();
c.setPackedGitLimit(128 * WindowCacheConfig.KB);
c.setPackedGitWindowSize(8 * WindowCacheConfig.KB);
c.setPackedGitMMAP(useMMAP);
c.setDeltaBaseCacheLimit(8 * WindowCacheConfig.KB);
c.install();
}