test: migrate remaining tests to run.go

* bug248, bug345, bug369, and bug429 were ported from bash commands to run scripts. bug369 remains disabled.
* bug395 is a test for issue 1909, which is still open. It is marked as skip now and will be usable with compile with run.go when issue 1909 is fixed.

Fixes #4139

Updates #1909

Change-Id: Ibb5fbfb5cf72ddc285829245318eeacd3fb5a636
Reviewed-on: https://go-review.googlesource.com/1774
Reviewed-by: Russ Cox <rsc@golang.org>

test/fixedbugs/bug429_run.go

@@ -0,0 +1,34 @@
+// +build !nacl
+// run
+
+// Copyright 2014 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.
+
+// Run the bug429.go test.
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+func main() {
+	cmd := exec.Command("go", "run", filepath.Join("fixedbugs", "bug429.go"))
+	out, err := cmd.CombinedOutput()
+	if err == nil {
+		fmt.Println("expected deadlock")
+		os.Exit(1)
+	}
+
+	want := "fatal error: all goroutines are asleep - deadlock!"
+	got := string(out)
+	if !strings.Contains(got, want) {
+		fmt.Printf("got:\n%q\nshould contain:\n%q\n", got, want)
+		os.Exit(1)
+	}
+}