argus and sasl2 support

[Carter Bullard]

So I did a little research, and because sasl1 is basically
unsupported now, we should shift argus to sasl2 before
we release the code.  I'll try to have it finished today.

It is a major change, and not much hope for backward
compatibility, but I will try to offer both sasl1 and sasl2
support if there is an urgent need.  if not, I'll do the
sasl2 thing.

Hope all is most excellent,

Carter