Yes, you are correct that the resource naming scheme prevents nested
resource libraries. Nested resource libraries were not on the list of
requirements when we designed this feature back in November of 2007. We
will not accept this requirement change at this point.
So the spec needs to at least be clear that it's not permitted and suggest the alternative. Several people reading it didn't understand what to do in this case.
IMHO, it's a shame that we can't use the nested structure. Seems like a pretty obvious convention instead of configuration thing. I don't know how that got missed in the design process.
-Dan