"how is French media reacting to the recent BBC poll showing that most Iraqis are happier now than before the war and that 71% are optimistic about Iraq's future?"
As far as I'm informed, in the same way they reacted to Alain Hertoghe's book accusing them of constant deception in their coverage of the war: they just disregard it.
This good news is being reported - isn't it?
Well if it is, I still have to see it.
I learned about it myself on the BBC.