It's nearly useless and for plain 'go doc', 'godoc .' works fine.
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/
13004044
cmd/gc: make missing package error fatal (CL 12677043).
cmd/go: test coverage (CL 10413044).
cmd/go: add -t flag to 'go get' to download test dependencies (CL 12566046).
+cmd/go: delete 'go doc' (CL 12974043).
archive/zip: add File.DataOffset accessor (CL 12784045).
bufio: add Reset methods to Reader and Writer (CL 12603049).