new test case for bug 208

tests/bugs/empty_for_loop_T208.pyx

+__doc__ = u"""
+  >>> go_py_empty()
+  20
+  >>> go_c_empty()
+  20
+"""
+
+def go_py_empty():
+    i = 20
+    for i in range(4,0):
+        print u"Spam!"
+    return i
+
+def go_c_empty():
+    cdef int i = 20
+    for i in range(4,0):
+        print u"Spam!"
+    return i