Tests for ticket #355, ctypedef public classes

tests/compile/ctypedef_public_class_T355.pxd

+ctypedef public class Time [type MyTime_Type, object MyTimeObject]:
+     cdef public double seconds
+
+ctypedef public class Event [type MyEvent_Type, object MyEventObject]:
+     cdef public Time time
\ No newline at end of file

tests/compile/ctypedef_public_class_T355.pyx

+ctypedef public class Time [type MyTime_Type, object MyTimeObject]:
+     def __init__(self, seconds):
+         self.seconds = seconds
+
+ctypedef public class Event [type MyEvent_Type, object MyEventObject]:
+     def __init__(self, Time time):
+         self.time = time
\ No newline at end of file