Use Go1.11 module (#5743)

* Migrate to go modules

* make vendor

* Update mvdan.cc/xurls

* make vendor

* Update code.gitea.io/git

* make fmt-check

* Update github.com/go-sql-driver/mysql

* make vendor

vendor/github.com/facebookgo/stats/.travis.yml

@@ -0,0 +1,20 @@
+language: go
+
+go:
+  - 1.5
+
+before_install:
+  - go get -v golang.org/x/tools/cmd/vet
+  - go get -v golang.org/x/tools/cmd/cover
+  - go get -v github.com/golang/lint/golint
+
+install:
+  - go install -race -v std
+  - go get -race -t -v ./...
+  - go install -race -v ./...
+
+script:
+  - go vet ./...
+  - $HOME/gopath/bin/golint .
+  - go test -cpu=2 -race -v ./...
+  - go test -cpu=2 -covermode=atomic ./...

vendor/github.com/facebookgo/stats/readme.md

@@ -0,0 +1,4 @@
+stats [![Build Status](https://secure.travis-ci.org/facebookgo/stats.png)](https://travis-ci.org/facebookgo/stats)
+=====
+
+Documentation: https://godoc.org/github.com/facebookgo/stats