tests: Allow tests to pass against CPython 3.5.

All breaking changes going from 3.4 to 3.5 are contained in
basics/python34.py.

tests/basics/builtin_eval_error.py

@@ -1,6 +1,6 @@
 # test if eval raises SyntaxError
 
 try:
-    print(eval("[1, *a]"))
+    print(eval("[1,,]"))
 except SyntaxError:
     print("SyntaxError")