Move some compile-fail tests to ui

Author: estebank

src/test/compile-fail/issue-10176.rs renamed to src/test/ui/issue-10176.rs

@@ -0,0 +1,14 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-10176.rs:12:5
+   |
+LL | fn f() -> isize {
+   |           ----- expected `isize` because of return type
+LL |     (return 1, return 2)
+   |     ^^^^^^^^^^^^^^^^^^^^ expected isize, found tuple
+   |
+   = note: expected type `isize`
+              found type `(!, !)`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.