I have just pushed it to
<http://www.ccil.org/~cowan/temp/list-queues.tar.gz>.  Please note that
the file "list-queues.import.scm" is an artifact of Chicken compiling,
and should be removed from the archive; it is not in this tarball.
There are now more tests, all of which pass.

Unfortunately, as I noted earlier the terms "front" and "back" were
interchanged in the definitions of -unfold and -unfold-right.  A corrected
version is available at <http://www.ccil.org/~cowan/temp/srfi-117.html>.

I'll make sure not to try to finalize anything with an incomplete
implementation in future.