Command line - use of directory for "single instance" configurations

[richieadler]

Invoking XnView with a path (relative or absolute) opens the browser view in the indicated directory.

However, if "single instance" is set and xnview is called again with a different path, the existing instance is brought to front, but the directory passed is ignored.

It would be nice if the passed directory in the second invocation was used to update the browser view, showing the new location.