dl: add go1.11.4 and go1.10.7

Go 1.11.4 and 1.10.7 have been released, add commands for them.

Change-Id: Ic6e78e9595ffad6d83a56bb77ae9f708677826a1
Reviewed-on: https://go-review.googlesource.com/c/154344
Reviewed-by: Filippo Valsorda <filippo@golang.org>
diff --git a/go1.10.7/main.go b/go1.10.7/main.go
new file mode 100644
index 0000000..c006f65
--- /dev/null
+++ b/go1.10.7/main.go
@@ -0,0 +1,24 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The go1.10.7 command runs the go command from Go 1.10.7.
+//
+// To install, run:
+//
+//     $ go get golang.org/dl/go1.10.7
+//     $ go1.10.7 download
+//
+// And then use the go1.10.7 command as if it were your normal go
+// command.
+//
+// See the release notes at https://golang.org/doc/go1.10
+//
+// File bugs at https://golang.org/issues/new
+package main
+
+import "golang.org/dl/internal/version"
+
+func main() {
+	version.Run("go1.10.7")
+}
diff --git a/go1.11.4/main.go b/go1.11.4/main.go
new file mode 100644
index 0000000..e126e4f
--- /dev/null
+++ b/go1.11.4/main.go
@@ -0,0 +1,24 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The go1.11.4 command runs the go command from Go 1.11.4.
+//
+// To install, run:
+//
+//     $ go get golang.org/dl/go1.11.4
+//     $ go1.11.4 download
+//
+// And then use the go1.11.4 command as if it were your normal go
+// command.
+//
+// See the release notes at https://golang.org/doc/go1.11
+//
+// File bugs at https://golang.org/issues/new
+package main
+
+import "golang.org/dl/internal/version"
+
+func main() {
+	version.Run("go1.11.4")
+}