Move client playlists away from the preferences folder


--- a/Slim/Player/Playlist.pm	2012-05-29 13:43:52.700212318 +0100
+++ b/Slim/Player/Playlist.pm	2012-05-29 13:43:52.692212037 +0100
@@ -1189,7 +1189,7 @@
 	$id =~ s/://g;
 
 	return Slim::Utils::Misc::fileURLFromPath(
-		catfile(scalar Slim::Utils::OSDetect::dirsFor('prefs'), "clientplaylist_$id.m3u")
+		catfile(scalar Slim::Utils::OSDetect::dirsFor('ClientPlaylists'), "clientplaylist_$id.m3u")
 	);
 }