hook concept checking into compiler checking? (was Re: feb-2002 libstdc++ outstanding)

[Benjamin Kosnik]

> What if we make --enable-concept-checking pay attention to the top-level's
> --enable-checking option?

Hmmmmmmm....... sounds like a promising idea. First though, are 
testresults identical for --enable-concept-checking and 
--disable-concept-checking?

-benjamin