Regarding what the Iraqis were shouting at the conference, I have a partial answer only.
I was watching (not in the same room, but on another tv in the green zone) with an American who speaks moderate Arabic (I speak a few words) and some Iraqi translators.
I could tell they were saying something Saddam! repeatedly.
The American said it was just general insults.
The Iraqi said it was something like a mix of "Down Saddam" and "Hate Saddam" and "Never again Saddam".
Then he said it was more a thing like "You used to be high and mighty, but look at you now, Saddam"
Best I can do.