Fix check_dup untaint bug.
Give better warnings on _re_match errors.
Various _re_match fixes.
Fix 'too many open files' bug when installing.
Incorporate new help files.  Optimize TextOutput::put.
Final preparation for snapshot.
Include new files in the manifest.
Implement site-wide configuration and stock response files.
Turn on autoloading.
Added unregister command.
Beginnings of digest work.  Better command counts in Parser.  Bug fixes.
Prevent users from specifying illegal domains.
More digest support.  Internal Archive restructuring.  Redone unique ID generation.  Bug fixes.
Further digest work.  Multiple index line formats.  Bug fixes.
Updated to BillD's latest work.