luasocket port

[David Thiel]

Hello apache,

I've updated the luasocket port to use the updated version, 3.0rc1,
which adds IPv6 support; I also removed some obsolete compatibility
stubs and added stage support. I've tested it with Prosody and it
appears to work fine. If you have no objections, I'd like to go ahead
and commit the update.

The one thing I don't understand in the current port is
patch-src_buffer_c -- it simply seems to rename a few functions, putting
"ls_" in front of them. This doesn't seem necessary; does anyone know
what purpose this serves?

Thanks,
David