Biggest change in this patch is that I've written the skeleton of the ZUM
server. A fun note is that I wrote it without incurring even one compiler
error or even warning, which is pretty novel. DOES THIS MEAN THAT THE ZAMBESII
API IS CLEAN AND EASY TO USE??? Find out next, in "usability testing".

* Fixed a bug in the assignment of parent-tag-IDs for devices. Parent-ID-0
  should be reserved since it is used as the "any parent" value in
  udi_enumerate_req.
  ^ Parent tag IDs are now given out from 1.