not to get off topic, as i am also waiting to hear what Christians and evolutionists have in common, but as far as the bible being a history book, it is. Why would God spend so much time breaking down the bible to even include geneology of people from the beginning all the way to Jesus, and what about future historical events that are recorded? The completed history of this age has been given to us for our benefit.
And as far as not taking all the bible literal, that is scary, because you then have to or get to pick and choose what to believe and not to believe. One could say that angels interaction with man was a metephore, or satan was not real just some way to describe adams sin nature. Even with the illistrations and symbols of the bible, we must count them as real and from God, and then understand them in context of the complete text. Was there a real prodical Son, with a real name that Jesus was specifically referring to in that parable, who knows, but it does not discount the context of the story, that man has turned on God, tried to do it on his own, to only find out he was wrong and turn back to God in forgiveness and repentance, and God accepting man back.