allow long argument as slice stop (wrap around is fine here)

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/subscript/SliceLiteralNode.java

@@ -88,6 +88,11 @@ public PSlice doSlice(@SuppressWarnings("unused") PNone start, int stop, @Suppre
         return factory().createSlice(MISSING_INDEX, stop, MISSING_INDEX);
     }
 
+    @Specialization
+    public PSlice doSlice(@SuppressWarnings("unused") PNone start, long stop, @SuppressWarnings("unused") PNone step) {
+        return factory().createSlice(MISSING_INDEX, (int) stop, MISSING_INDEX);
+    }
+
     @Specialization
     public PSlice doSlice(@SuppressWarnings("unused") PNone start, @SuppressWarnings("unused") PNone stop, int step) {
         return factory().createSlice(MISSING_INDEX, MISSING_INDEX, step);