version 22.


git-svn-id: http://www.nlnetlabs.nl/svn/nsd/trunk@3886 a26ef69c-88ff-0310-839f-98b793d9c207
- use less memory for non-nsec3, nsec3tree.


git-svn-id: http://www.nlnetlabs.nl/svn/nsd/trunk@3887 a26ef69c-88ff-0310-839f-98b793d9c207