(PUP-2093) Support hyphenated module names as dependencies.

In master, hyphenated module names are supported (effectively)
everywhere except as the name of a dependency. A previous commit in this
branch attempted to alleviate that situation, but failed to adequately
test the change and its implications, and potential failures existed.

This change introduces a change to existing tests that triggers the
offensive behavior both in master and in this branch, and refactors the
implementation to apply the necessary transliteration in all required
locations.