Fixed Move & Copy posts to existing thread Log action phrase

[Syndol]

When posts are moved or copied to an existing thread the log action is displayed as 'Thread created by moving/copying posts'
It should instead say something like 'Posts moved/copied to existing thread'

Could you please let me know if you plan to change as I need to know whether to update my add-on accordingly.
Thank you.

 

[Mike]

I've added new actions for the existing case ("post_<action>_target_existing").