Change 'expected: fail' to 'skip-if' since they work on some platforms and not others

src/runtime/objmodel.cpp

@@ -1023,6 +1023,7 @@ Box* getattrInternalGeneral(Box* obj, const std::string& attr, GetattrRewriteArg
                 _get_ = typeLookup(descr->cls, "__get__", NULL);
             }
 
+            // As an optimization, don't check for __set__ if we're in cls_only mode, since it won't matter.
             if (_get_ && !cls_only) {
                 // Check if __set__ exists
                 Box* _set_ = NULL;

test/tests/class_noctor.py

-# expected: fail
+# skip-if: sys.version_info.micro >= 4
+# - Error message changed in 2.7.4
+
 # Regression test:
 # If the init function doesn't exist, shouldn't just silently ignore any args
 # that got passed

test/tests/object_new_arguments.py

-# expected: fail
+# skip-if: sys.version_info.micro >= 4
+# - Error message changed in 2.7.4
+
 # object.__new__ doesn't complain if __init__ is overridden:
 
 class C1(object):