6.0 and -O2 option

[Martin Nilsson]

Jim C. Nasby wrote:
> Even if the identification can't be done automatically, it still seems
> like it would be good to start identifying ports that don't support -O
> by hand, and having the ports force a correct -O setting. Most ports
> support -O2 (if not -O3), and it would be nice if people could just put
> that option in their make.conf and be done with it.

It would be even better if we had some way to handle ports that work 
with make -j n and those who don't, as it is now a SMP machine is a 
total waste when compiling ports.

/Martin