Git: ignore dirty status in Loupe submodule
Git: ignore dirty status in Loupe submodule

As I intend to do any further work on the plug-in directly in the
submodule, let's not have that bother the superproject status.

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent