Move all our tests back to ui tests

tests/ui/overflow_check_conditional.rs

@@ -0,0 +1,61 @@
+#![feature(plugin)]
+#![plugin(clippy)]
+
+#![allow(many_single_char_names)]
+#![warn(overflow_check_conditional)]
+
+fn main() {
+	let a: u32 = 1;
+	let b: u32 = 2;
+	let c: u32 = 3;
+	if a + b < a {
+
+	}
+	if a > a + b {
+
+	}
+	if a + b < b {
+
+	}
+	if b > a + b {
+
+	}
+	if a - b > b {
+
+	}
+	if b < a - b {
+
+	}
+	if a - b > a {
+
+	}
+	if a < a - b {
+
+	}
+	if a + b < c {
+
+	}
+	if c > a + b {
+
+	}
+	if a - b < c {
+
+	}
+	if c > a - b {
+
+	}
+	let i = 1.1;
+	let j = 2.2;
+	if i + j < i {
+
+	}
+	if i - j < i {
+
+	}
+	if i > i + j {
+
+	}
+	if i - j < i {
+
+	}
+}