[sigcomm] Updated list posting policies

[Joe Touch]

Hi, all,

The posting policies for this and all lists hosted at postel.org have
been updated. They now include the basic policies of the
end2end-interest list, which have been copied here:

http://www.postel.org/mail-faq.html

That info describes:

	- appropriate list use
	- possible ways posts may be held or discarded
	- limits to posting job and meeting announcements

This link is now included on the info page for this list at postel.org.

Please review the policies and let me know if you have any questions.

Joe Touch (list admin)