make an old test from 'broken' directory usable

--HG--
rename : tests/broken/typeofexttype.pyx => tests/run/typeofexttype.pyx

tests/broken/typeofexttype.pyx → tests/run/typeofexttype.pyx

+# mode: run
+# tag: exttype
+
+
 cdef class Spam:
     pass
 
-cdef int f() except -1:
+
+def test():
+    """
+    >>> test()
+    """
     cdef type t
     t = Spam