bug#58985: 29.0.50; Have auth-source-pass behave more like other back ends

[Damien Cassou]

Hi J.P.,

thank you very much for working on auth-source-pass. I think it's fine
to break backward compatibility if it makes auth-source-pass closer to
what auth-source requires.

I don't have time to review the code though, I'm sorry.

Best

-- 
Damien Cassou

"Success is the ability to go from one failure to another without
losing enthusiasm." --Winston Churchill