Also report any OS python plugin in use.

llvm-svn: 184487
diff --git a/lldb/examples/python/diagnose_unwind.py b/lldb/examples/python/diagnose_unwind.py
index 190143e..b5bec1e 100644
--- a/lldb/examples/python/diagnose_unwind.py
+++ b/lldb/examples/python/diagnose_unwind.py
@@ -142,6 +142,9 @@
         print ""
         print "============================================================================================="
         print ""
+        print "OS plugin setting:"
+        debugger.HandleCommand("settings show target.process.python-os-plugin-path")
+        print ""
         print "Live register context:"
         thread.SetSelectedFrame(0)
         debugger.HandleCommand("register read")