Add security hardening for 4.0.1? (was: Introducing security hardening features for Lenny)

[Fathi Boudra]

> What do you think about trying to add some of these features for 4.0.1?

No, forget it for 4.0.1 ;)

to quote myself:
1. "you go too fast, there's already madcoder who replied about suggested 
flags"

2. "plz, try localy first and drop your change on -talk before ;)"

I completely agree with Pierre:
"don't hurry, wait for the discussion that will probably come"