WebDAV: How to set cache and archive values when creating a source directory

From the RBNB-dev mailing list, how to set the cache and archive parameters.

As background, creating a directory in an WebDAV-mounted filesystem is the same as creating a new source in RBNB. If you use special syntax, you can tell DataTurbine how much memory and disk to set aside for this new source. Here, cribbed from the email discussion, are the instructions:

  mkdir foo@"a=100000&c=1000"

Where a is archive and c is cache, in either frames or seconds. See the TrimByTime FAQ entry for more details.