std::map and std::set based on AVL, not RB trees.

[Paolo Carlini]

Gabriel Dos Reis wrote:

>In this particular case, do we insist on implementing something that is
>hardly justifiable, apart from a literal reading that does no service?
>I think, the answer must be no.
>  
>
We would be adding additional complexity for implementing a behavior which
is not mandated anywhere. Personally, I consider this stance wrong.

That said, of course you are a maintainer like me, and, if you really
want to
implement that, I will not even try to stop you. Actually, no more comments
from me about this issue.

Paolo.