Sync asyncio with Tulip: Fix test_tasks for Python 3.5

On Python 3.5, generator now gets their name from the function, no more from
the code. So we get the expected "notmuch" name instead of the generic "coro"
name.

Lib/test/test_asyncio/test_tasks.py

@@ -2,6 +2,7 @@
 
 import gc
 import os.path
+import sys
 import types
 import unittest
 import weakref
@@ -154,10 +155,13 @@ class TaskTests(unittest.TestCase):
         t = MyTask(gen, loop=self.loop)
         filename = gen.gi_code.co_filename
         lineno = gen.gi_frame.f_lineno
-        # FIXME: check for the name "coro" instead of "notmuch" because
-        # @asyncio.coroutine drops the name of the wrapped function:
-        # http://bugs.python.org/issue21205
-        self.assertEqual(repr(t), 'T[](<coro at %s:%s>)' % (filename, lineno))
+        if sys.version_info >= (3, 5):
+            name = 'notmuch'
+        else:
+            # On Python < 3.5, generators inherit the name of the code, not of
+            # the function. See: http://bugs.python.org/issue21205
+            name = 'coro'
+        self.assertEqual(repr(t), 'T[](<%s at %s:%s>)' % (name, filename, lineno))
 
     def test_task_basics(self):
         @asyncio.coroutine