Experimental Rlogin support, thanks to Delian Delchev. Local flow

control is unsupported, and server-to-client comms may fail for want
of working TCP Urgent.

[originally from svn r875]

be_none.c

@@ -11,6 +11,7 @@
 struct backend_list backends[] = {
     {PROT_SSH, "ssh", NULL},
     {PROT_TELNET, "telnet", NULL},
+    {PROT_RLOGIN, "rlogin", NULL},
     {PROT_RAW, "raw", NULL},
     {0, NULL}
 };