tests: ignore inotify extension in test-duplicateoptions.py The inotify extension is only available on linux and setup.py will not install it on other platforms - but it will of course always be there in the source. test-duplicateoptions.py tried to load most extensions (including inotify if available). When the local uninstalled Mercurial was used it would thus always load the inotify extension and cause a warning on unsupported platforms. The inotify extension is not relevant for this test, so now we explicitly ignore it.