Fix for issue #10406: enable Rstrip extension on OSX
Without this patch the Rstrip extension for IDLE is not enabled on OSX,
while it is enabled on other platforms.
Patch by Ned Deily.
diff --git a/Mac/IDLE/config-extensions.def b/Mac/IDLE/config-extensions.def
index c17f068..1791b9c 100644
--- a/Mac/IDLE/config-extensions.def
+++ b/Mac/IDLE/config-extensions.def
@@ -86,3 +86,8 @@
fgcolor=Black
[CodeContext_bindings]
toggle-code-context=
+
+[RstripExtension]
+enable=1
+enable_shell=0
+enable_editor=1