Update dependencies (#886)

vendor/github.com/d5/tengo/.travis.yml

@@ -1,13 +1,13 @@
 language: go
 
 go:
-  - 1.9
+  - "1.12"
 
 install:
-  - go get -u golang.org/x/lint/golint
+  - env GO111MODULE=on go get -u golang.org/x/lint/golint
 
 script:
-  - make test
+  - env GO111MODULE=on make test
 
 deploy:
   - provider: script

vendor/github.com/d5/tengo/go.mod

@@ -0,0 +1,3 @@
+module github.com/d5/tengo
+
+go 1.12

vendor/github.com/d5/tengo/stdlib/gensrcmods.go

@@ -1,53 +0,0 @@
-// +build ignore
-
-package main
-
-import (
-	"bytes"
-	"io/ioutil"
-	"log"
-	"regexp"
-	"strconv"
-)
-
-var tengoModFileRE = regexp.MustCompile(`^srcmod_(\w+).tengo$`)
-
-func main() {
-	modules := make(map[string]string)
-
-	// enumerate all Tengo module files
-	files, err := ioutil.ReadDir(".")
-	if err != nil {
-		log.Fatal(err)
-	}
-	for _, file := range files {
-		m := tengoModFileRE.FindStringSubmatch(file.Name())
-		if m != nil {
-			modName := m[1]
-
-			src, err := ioutil.ReadFile(file.Name())
-			if err != nil {
-				log.Fatalf("file '%s' read error: %s", file.Name(), err.Error())
-			}
-
-			modules[modName] = string(src)
-		}
-	}
-
-	var out bytes.Buffer
-	out.WriteString(`// Code generated using gensrcmods.go; DO NOT EDIT.
-
-package stdlib
-
-// SourceModules are source type standard library modules.
-var SourceModules = map[string]string{` + "\n")
-	for modName, modSrc := range modules {
-		out.WriteString("\t\"" + modName + "\": " + strconv.Quote(modSrc) + ",\n")
-	}
-	out.WriteString("}\n")
-
-	const target = "source_modules.go"
-	if err := ioutil.WriteFile(target, out.Bytes(), 0644); err != nil {
-		log.Fatal(err)
-	}
-}