Disable asyncio coroutine tests in Py3.4 as coroutines are not iterables but...

Disable asyncio coroutine tests in Py3.4 as coroutines are not iterables but Task() features this beautiful line of code:
        self._coro = iter(coro)  # Use the iterator just in case.

tests/run/test_asyncgen.py

@@ -18,6 +18,9 @@ import contextlib
 #asyncio = import_module("asyncio")
 
 try:
+    if sys.version_info[:2] == (3, 4):
+        # asnycio in Py3.4 does not support awaitable coroutines (requires iterators instead)
+        raise ImportError
     import asyncio
 except ImportError:
     try: