auto-login using rsh

I know that rsh is deprecated but it is used all over the place in the test harness for the product I am working on. I needed to enable auto-login for rsh and rcp but Google didn't give definitive answers. So here is how you should do it:

- Install rsh-server RPM on the machines which will be communicating
- In /etc/xinetd/{rsh, rexec, rlogin} change "disable = yes" to "disable = no"
- Add rsh, rexec and rlogin to /etc/securetty
- Restart xinetd service:
service xinetd restart
- Add "hostname username" combinations in ~/.rhosts file. For example if you want to allow root@garfield access then add "garfield root".