No longer do we keep track of const iota style. Just encode the behavior
in the server for defaults, add a validation function, call it a day.
Change-Id: I603e9dd287a57084c78c543f1ce83b0acf47a765
I think I understand this now; the failure comes from here:
https://golang.org/src/cmd/go/vcs.go#L818
and makes it so one can't both host:
- github.com/foo
- github.com/foo/bar
which would have to clone the latter inside of the former.
Fixes#1.
