WebDAV server test suite

 A WebDAV server protocol compliance test suite. Tests include:
 .
  * OPTIONS for DAV: header
  * PUT, GET with byte comparison
  * MKCOL
  * DELETE (collections, non-collections)
  * COPY, MOVE using combinations of:
   - overwrite t/f
   - destination exists/doesn't exist
   - collection/non-collection
  * Property manipulation and querying:
   - set, delete, replace properties
   - persist dead props across COPY
   - namespace handling
  * Locking
   - attempts to modify locked resource (as lock owner, not owner)
   - shared/exclusive locks, lock discovery