Work around broken Lstat on Android

internal/osutil/lstat_broken.go

@@ -0,0 +1,29 @@
+// Copyright (C) 2015 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// +build linux android
+
+package osutil
+
+import (
+	"os"
+	"syscall"
+	"time"
+)
+
+// Lstat is like os.Lstat, except lobotomized for Android. See
+// https://forum.syncthing.net/t/2395
+func Lstat(name string) (fi os.FileInfo, err error) {
+	for i := 0; i < 10; i++ { // We have to draw the line somewhere
+		fi, err = os.Lstat(name)
+		if err, ok := err.(*os.PathError); ok && err.Err == syscall.EINTR {
+			time.Sleep(time.Duration(i+1) * time.Millisecond)
+			continue
+		}
+		return
+	}
+	return
+}