pinging for s9y

i sent this to the serendipity mailing list, but because sourceforget has wretched mailing list archives (they haven’t been updated since the beginning of the month for the s9y list), i have no idea whether it actually made it. anyway, here is a patch to add support for pinging,,, and to s9y. it is not a very slick integration, but i figured it would be enough to get the ball rolling for the s9y developers. (the patch is against yesterday’s snapshot.)

i now return you to your irregular scheduled programming.