Make a couple collections in resolveDependencies() unordered
Make a couple collections in resolveDependencies() unordered

As long as project identifiers are eventually ordered before
permutation, it doesn’t matter if these are.

jspahrsummers/Arbiter,ArbiterLib/Arbiter,ArbiterLib/Arbiter,ArbiterLib/Arbiter,jspahrsummers/Arbiter,ArbiterLib/Arbiter,jspahrsummers/Arbiter,jspahrsummers/Arbiter