Broken import path

[GoogleCodeExporter]

What steps will reproduce the problem?
1. go get code.google.com/p/rog-go/exp/cmd/godef

What is the expected output? What do you see instead?

package code.google.com/p/goplan9/plan9/acme
    imports code.google.com/p/goplan9/plan9/acme
    imports code.google.com/p/goplan9/plan9/acme: cannot find package "code.google.com/p/goplan9/plan9/acme" in any of:
    /Users/neilc/local/go/src/code.google.com/p/goplan9/plan9/acme (from $GOROOT)
    /Users/neilc/sweng/oms/src/code.google.com/p/goplan9/plan9/acme (from $GOPATH)

Please provide any additional information below.

goplan9 has moved to https://github.com/9fans/go

Original issue reported on code.google.com by neil.conway@gmail.com on 9 Jan 2015 at 5:23