#10404: Use ctl-button-1 for context menus on OSX Idle.

This provides access to the context menus where they previously could
not be accessed due to the way OSX Tk binds buttons.  It also
improves platform consistency.

Patch by Ned Deily.
diff --git a/Misc/NEWS b/Misc/NEWS
index 020ddd1..456b1ef 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -23,7 +23,9 @@
 Library
 -------
 
-- Issue $9907: Fix tab handling on OSX when using editline by calling
+- Issue #10404: Use ctl-button-1 on OSX for the context menu in Idle.
+
+- Issue #9907: Fix tab handling on OSX when using editline by calling
   rl_initialize first, then setting our custom defaults, then reading .editrc.
 
 - Issue #4188: Avoid creating dummy thread objects when logging operations