Fix #9600. Don't use relative imports for _multiprocessing on Windows.
Same fix as #9513 on 3.x.
diff --git a/Lib/multiprocessing/reduction.py b/Lib/multiprocessing/reduction.py
index 1813729..60e7151 100644
--- a/Lib/multiprocessing/reduction.py
+++ b/Lib/multiprocessing/reduction.py
@@ -34,7 +34,7 @@
if sys.platform == 'win32':
import _subprocess
- from ._multiprocessing import win32
+ from _multiprocessing import win32
def send_handle(conn, handle, destination_pid):
process_handle = win32.OpenProcess(