Move all compile-fail tests to ui tests

The update-references.sh script makes these much easier to update in
bulk compared to compile-fail tests.

test_suite/tests/ui/remote/wrong_getter.rs

@@ -0,0 +1,31 @@
+// Copyright 2017 Serde Developers
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[macro_use]
+extern crate serde_derive;
+
+mod remote {
+    pub struct S {
+        a: u8,
+    }
+
+    impl S {
+        pub fn get(&self) -> u16 {
+            self.a as u16
+        }
+    }
+}
+
+#[derive(Serialize)]
+#[serde(remote = "remote::S")]
+struct S {
+    #[serde(getter = "remote::S::get")]
+    a: u8,
+}
+
+fn main() {}