[patch] add ip address family support to radeapclient

[Alan DeKok]

John Dennis wrote:
> Attached is a patch that adds support for the -4 and -6 ip address
> family selection command line arguments that many of the other commands
> accept.
> 
> The original bug report that triggered the creation of this patch is:
> https://bugzilla.redhat.com/show_bug.cgi?id=712803

  Added, thanks.

  Alan DeKok.