Should 3.2 still search backward/ headers by default?

[Paolo Carlini]

Phil Edwards wrote:

>Not strong ones.  Just weaker ones (simplification, removal of unneeded code,
>etc).  I'm happy to see them searched by default, but happier to see them
>only present when the user explicitly requests pre-Standard stuff.
>
Personally, I'm tempted to be with Phil, but weeks ago, when some 
backwards bits (backward/hash_map, I believe) turned out to be broken 
due to the ext/ work, *two* people (Jakub Jelinek and Philipp Thomas) 
noticed it at the same time! Therefore, I'm afraid a few widespread 
packages still use them heavily :-(

Paolo.