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/gopkg.in/src-d/go-git.v4/Makefile

@@ -0,0 +1,52 @@
+# General
+WORKDIR = $(PWD)
+
+# Go parameters
+GOCMD = go
+GOTEST = $(GOCMD) test -v
+
+# Git config
+GIT_VERSION ?=
+GIT_DIST_PATH ?= $(PWD)/.git-dist
+GIT_REPOSITORY = http://github.com/git/git.git
+
+# Coverage
+COVERAGE_REPORT = coverage.txt
+COVERAGE_PROFILE = profile.out
+COVERAGE_MODE = atomic
+
+ifneq ($(origin CI), undefined)
+	WORKDIR := $(GOPATH)/src/gopkg.in/src-d/go-git.v4
+endif
+
+build-git:
+	@if [ -f $(GIT_DIST_PATH)/git ]; then \
+		echo "nothing to do, using cache $(GIT_DIST_PATH)"; \
+	else \
+		git clone $(GIT_REPOSITORY) -b $(GIT_VERSION) --depth 1 --single-branch $(GIT_DIST_PATH); \
+		cd $(GIT_DIST_PATH); \
+		make configure; \
+		./configure; \
+		make all; \
+	fi
+
+test:
+	@cd $(WORKDIR); \
+	$(GOTEST) ./...
+
+test-coverage:
+	@cd $(WORKDIR); \
+	echo "" > $(COVERAGE_REPORT); \
+	for dir in `find . -name "*.go" | grep -o '.*/' | sort | uniq`; do \
+		$(GOTEST) $$dir -coverprofile=$(COVERAGE_PROFILE) -covermode=$(COVERAGE_MODE); \
+		if [ $$? != 0 ]; then \
+			exit 2; \
+		fi; \
+		if [ -f $(COVERAGE_PROFILE) ]; then \
+			cat $(COVERAGE_PROFILE) >> $(COVERAGE_REPORT); \
+			rm $(COVERAGE_PROFILE); \
+		fi; \
+	done; \
+
+clean:
+	rm -rf $(GIT_DIST_PATH)