C:\Go\src\github.com\golang>go get -u github.com/golang/lint/golint
package golang.org/x/tools/go/gcimporter15: directory "C:\\Go\\src\\golang.org\\x\\tools\\go\\gcimporter15" is not using a known version control system
go get -u github.com/golang/lint/golint
git clone https://github.com/golang/lint
c:\Go\src\golang.org\x>git clone https://github.com/golang/tools.git
gocode: go get -u -v github.com/nsf/gocode
godef: go get -u -v github.com/rogpeppe/godef
golint: go get -u -v github.com/golang/lint/golint
go-outline: go get -u -v github.com/lukehoban/go-outline
goreturns: go get -u -v sourcegraph.com/sqs/goreturns
gorename: go get -u -v golang.org/x/tools/cmd/gorename
gopkgs: go get -u -v github.com/tpng/gopkgs
go-symbols: go get -u -v github.com/newhook/go-symbols
guru: go get -u -v golang.org/x/tools/cmd/guru