Binary package “golang-golang-x-tools” in ubuntu xenial

supplementary Go tools

 This subrepository holds the source for various packages and tools that
 support the Go programming language.
 Some of the tools, godoc and vet for example, used to be included in the
 golang-go package. Others, including the Go oracle and the test coverage tool,
 can be fetched with "go get".
 Packages include a type-checker for Go and an implementation of the Static
 Single Assignment form (SSA) representation for Go programs.