Added code from windows branch

src/daemon_windows.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"os"
+)
+
+/* Daemonizes the process on windows
+ *
+ * This is done by spawning and releasing a copy with the --foreground flag
+ */
+
+func Daemonize() error {
+	argv := []string{os.Args[0], "--foreground"}
+	argv = append(argv, os.Args[1:]...)
+	attr := &os.ProcAttr{
+		Dir: ".",
+		Env: os.Environ(),
+		Files: []*os.File{
+			os.Stdin,
+			nil,
+			nil,
+		},
+	}
+	process, err := os.StartProcess(
+		argv[0],
+		argv,
+		attr,
+	)
+	if err != nil {
+		return err
+	}
+	process.Release()
+	return nil
+}