authorized_keys2 directory idea

[Theo de Raadt]

> > My suggestion was only to put it into /contrib... is that OK then?
> 
> Oh, that's a great idea.  And after a while, we'll have hundreds of
> incompatible versions for Markus to debug when you guys send in
> incomplete bug reports.

I want you all to think about this carefully.

We make our software completely free so that you guys can tweak it.
All you want.

But in our own distribution, it's kind of scary when lots of tweaks
happen.  It can impact developer effort VERY SIGNIFICANTLY when people
run local modifications.

A Linux vendor shipped with ssh with modifications that broke interop
with various older ones.  It took effort to figure out what was going
on.  It took effort to convince them to alert their user base.  It
wasted time.  I firmly believe that contrib directories do too.

For years I have been saying that "buttons are bad"...