tests: Move run-pass tests without naming conflicts to ui

src/test/ui/array-slice-vec/mutable-alias-vec.rs

@@ -0,0 +1,15 @@
+// run-pass
+
+fn grow(v: &mut Vec<isize> ) {
+    v.push(1);
+}
+
+pub fn main() {
+    let mut v: Vec<isize> = Vec::new();
+    grow(&mut v);
+    grow(&mut v);
+    grow(&mut v);
+    let len = v.len();
+    println!("{}", len);
+    assert_eq!(len, 3 as usize);
+}