[Devel] record_route with optional parameter parameter

[Juha Heinanen]

Bogdan-Andrei Iancu writes:

 > actually the patch is just a shortcut, right? instead of add_rr_param() 
 > + record_route().

sort of yes.  it knows that rr was not already done and it always resets
the buffer.

in addition to this, we would need nat flag per contact so that we would
know in branch route if rr needs to be called with or without
parameters.

-- juha