[Patch] Qualify min(), max() and distance() in v3.

[Benjamin Kosnik]

>Thanks Benjamin for your feedback. Everything considered (Mark's 
>announcement of 15 Dec.
>too) I think I will apply the patch to b-i-b, as Gaby suggested.

sounds like a good plan

>Also, in the next few hours I'd like to apply to the release branch the 
>fix for libstdc++/8790,
>a serious MT regression.

great! thanks.

i'll be back on full-time bug-squashing in a bit.

-benjamin