Register snapshots. Remove redundant Eq impls, Makefile hacks

src/test/compile-fail/borrowck-loan-in-overloaded-op.rs

@@ -2,14 +2,6 @@
 
 enum foo = ~uint;
 
-#[cfg(stage0)]
-impl foo: Add<foo, foo> {
-    pure fn add(f: foo) -> foo {
-        foo(~(**self + **f))
-    }
-}
-#[cfg(stage1)]
-#[cfg(stage2)]
 impl foo : Add<foo, foo> {
     pure fn add(f: &foo) -> foo {
         foo(~(**self + **(*f)))

src/test/compile-fail/borrowck-loan-rcvr-overloaded-op.rs

@@ -8,14 +8,6 @@ struct Point {
     y: int,
 }
 
-#[cfg(stage0)]
-impl Point : ops::Add<int,int> {
-    pure fn add(&&z: int) -> int {
-        self.x + self.y + z
-    }
-}
-#[cfg(stage1)]
-#[cfg(stage2)]
 impl Point : ops::Add<int,int> {
     pure fn add(z: &int) -> int {
         self.x + self.y + (*z)

src/test/compile-fail/issue-2587-2.rs

@@ -16,14 +16,6 @@ struct S {
 
 fn S(x: int) -> S { S { x: x } }
 
-#[cfg(stage0)]
-impl S: Add<S, S> {
-    pure fn add(rhs: S) -> S {
-        S { x: self.x + rhs.x }
-    }
-}
-#[cfg(stage1)]
-#[cfg(stage2)]
 impl S : Add<S, S> {
     pure fn add(rhs: &S) -> S {
         S { x: self.x + (*rhs).x }