Add a regression test for issue #374 (XFAILed)

Author: brson

src/test/run-pass/compare.rs renamed to src/test/run-pass/alias-uninit-value.rs

@@ -1,9 +1,15 @@
+// xfail-stage0
+// xfail-stage1
+// xfail-stage2
+
+// Regression test for issue #374
+
 use std;
 import std::option;
 import std::option::none;
 
 tag sty {
-    ty_nil;
+  ty_nil;
 }
 
 type raw_t = rec(sty struct,
@@ -12,10 +18,10 @@ type raw_t = rec(sty struct,
 
 fn mk_raw_ty(sty st, &option::t[str] cname) -> raw_t {
   ret rec(struct=st,
-	  cname=cname,
-	  hash=0u);
+          cname=cname,
+          hash=0u);
 }
 
 fn main() {
   mk_raw_ty(ty_nil, none[str]);
-}
+}