wineserver epoll

[Mike Hearn]

> Building with a recent glibc and running on an older one is not
> supported by glibc, and it won't work for many reasons having nothing
> to do with epoll. Crossover runs everywhere because it is built
> against a very old glibc.

To clarify, it is possible to build against a new glibc and have it run 
on older libcs, but the process is far from intuitive and requires 
special tools, header overrides etc. We do this in autopackage, and it 
works, but it's quite tricky to get right.

So I guess Shachar could use dlopen, or possibly the epoll functions are 
weak symbols - quite a lot of glibc functions are these days. In that 
case you can just mark them with the weak attribute and that's no problem.