...that had been broken when 5c22a033> "Cleaned
up CommandLineArgs" changed the representation of those multi-arguments from a
single string with \n delimiters to vector<string> in
desktop/soruce/app/cmdlineargs.hxx, but missed updating other producers of
such ApplicationEvents.

Change-Id: I527d620c60a87f3a01d970927c521163fb6df192