Issue #11569: use absolute path to the sysctl command in multiprocessing to
ensure that it will be found regardless of the shell PATH. This ensures
that multiprocessing.cpu_count works on default installs of MacOSX.

Patch by Steffen Daode Nurpmeso.
diff --git a/Misc/NEWS b/Misc/NEWS
index af1ba7f..0c5b7f2 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -43,6 +43,10 @@
 Library
 -------
 
+- Issue #11569: use absolute path to the sysctl command in multiprocessing to
+  ensure that it will be found regardless of the shell PATH. This ensures
+  that multiprocessing.cpu_count works on default installs of MacOSX.
+
 - Issue #11500: Fixed a bug in the os x proxy bypass code for fully qualified 
   IP addresses in the proxy exception list.