inotify: fix status not showing "clean" files (issue907)
The inotify server uses 'c' for clean, not 'n'.
adding aadding badding cadding dadding dir/bar/fooadding dir/xadding dir/yadding e% inserve? hg.pid% cleanC aC bC cC dC dir/bar/fooC dir/xC dir/yC e% all? hg.pidC aC bC cC dC dir/bar/fooC dir/xC dir/yC e