Wp-login.php URL to /login

The best way to do this is by using the plugin, Theme My Login,
http://wordpress.org/plugins/theme-my-login/

And you also get login/registration pages that look like your normal site pages instead of the default WordPress screen.

There could be but I don’t know about it, however this plugin gives you a lot of control and extra features that I am sure you’ll love once you try it.