You posted a whole lot of stuff. I doubt that you have read it yourself. You just wanted to spam us with it. But I don't see anything in there that says that Christianity is an evil religion.
The passage that comes the closest is /5: when the sacred months have passed, slay the idolaters wherever ye find them, and take them (captive), and besiege them, and prepare for them each ambush. But if they repent and establish worship and pay the poor- due, then leave their way free. Lo! Allah is forgiving, merciful.
According to you, or rather the writer you borrowed this from, "this verse tells us that muslims are free to convert non-muslims by force and brutality. If unsuccessful in doing so, they are free to kill."
Actually, "idolators" refers to the pre-muslim Arabs, who were polytheists and worshipped stone idols. Muhammed was very intolerant of these people, which is not to his credit. He was also intolerant of "people of the scripture who are disbelievers" as it says in an earlier passage. But this does not refer to Christians, either. It refers people of the book (Jews, Christians and Moslems) who choose not to believe.