litmus: 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
