AddFarVariationDependencies takes the first matching variant.  To
maintain sensible behavior on a module with aliases, the ordering
of aliases and module variants needs to be maintained so that
AddFarVariationDependencies can find an earlier matching alias
instead of a more specific variant.

Test: go test .
Change-Id: I78f4e96edd98159f3a62d94e240e5d652667bec4