Add O_SHLOCK & O_EXLOCK.  Closes patch #1103951.
diff --git a/Misc/NEWS b/Misc/NEWS
index b27b169..4d8f3b1 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -81,6 +81,9 @@
 Extension Modules
 -----------------
 
+- Patch #1103951: Expose O_SHLOCK and O_EXLOCK in the posix module if
+  available on the platform.
+
 - Bug #1166660: The readline module could segfault if hook functions
   were set in a different thread than that which called readline.