Add test for eval() w/ free variables.

Related to SF bug #505315

Lib/test/output/test_scope

@@ -21,3 +21,4 @@ test_scope
 20. interaction with trace function
 20. eval and exec with free variables
 21. list comprehension with local variables
+22. eval with free variables

Lib/test/test_scope.py

@@ -512,3 +512,13 @@ try:
     print bad
 except NameError:
     pass
+
+print "22. eval with free variables"
+
+def f(x):
+    def g():
+        x
+        eval("x + 1")
+    return g
+
+f(4)()