scala/scala — pull request #3537 by Blaisorblade (2014-02-16 22:10:26+00:00)
Title: SI-6566, unsoundness with alias variance: document fix

Commit a419799f872d5aae99728d711b1ced89e06804a8 changed the behavior of
relativeVariance, but without updating the corresponding comment. Fix
that.