Disable CLEANID again, actually clean up correctly when it is on
Disable CLEANID again, actually clean up correctly when it is on

* CLEANID is actually harmful when generating multiple documents into
  the same DAPS dir. (Because shared XMLs might contain different sets
  of IDs.)
* I made this buggy in e34f2b0 by copypastaing -- we need a list of
  linkends here not a list of IDs

sknorr/dietrich