Ticket #3096: clarify "Setup saved to ~/.config/mc/ini" message.

The "Options -> Save setup" menu entry tells me "Setup saved to
~/.config/mc/ini".

This information is misleading, since this is not the only file
written, e.g. panels.ini is also updated.

Now this message contains the directory only:
"Setup saved to ~/.config/mc".

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Merge branch '3096_save_setup_message'

* 3096_save_setup_message:
  Ticket #3096: clarify "Setup saved to ~/.config/mc/ini" message.