Missing qualifications

[Paolo Carlini]

Hi Chris and sorry about the delay...

>In myy most recent patch, I missed some qualifications in the new bits of
>predefined-ops.h (i think those were the only ones...) apologises
>  
>
No problem. To be sure: you mean bind2nd constructor and equal shold 
take a const ref? I'm testing now with these changes.

If everything goes well, I'm going to commit to the branch later today.

Two comments: can you confirm that current mainline is able to deal 
perfectly with the additional abstractions at -O2? Also, can you 
describe a bit what's going wrong with search/search_n? Or, if you have 
a draft on top of the last patch, send it over... In any case, I don't 
want to risk taking a wrong route... ;)

Paolo.