Bug#888733: hyantesite: test failures on most architectures

[Rebecca N. Palmer]

It looks like ra_pareto was also broken on amd64 (probably for the same 
"two variables with the same name" reason, though I haven't tested 
this), giving a constant output within its range circle, and the 
ra_pareto.out reference used that broken version (it's identical to 
ra_disk.out).

Hence, I now consider it likely that the two fixes above do work, and 
the test references are wrong.

Furthermore, the documentation doesn't match the actual behaviour (with 
or without these fixes):
- It shows amortized_disk as a cone; it's now actually 1/(1+distance).
- It shows nonzero output extending outside the distance=range circles, 
which is now not possible (hyantes_run.c:82).

The definitions of amortized_disk and pareto are also weird in that they 
change shape (not just scale) when range is changed.

Upstream appears to be abandoned (last commit 6 years ago, last upload 
by the sole Uploader (who is also upstream) nearly 7 years ago).