updated keyring/keyserver stuff; updated lists-archives URL; changed link for machine...

updated keyring/keyserver stuff; updated lists-archives URL; changed link for machines from devel/maintainer_contacts to the db.d.o CGI; updated new-maintainer stuff; updated for master->ftp-master move; noted d.o is the right host for web pages, but all other machines could be used if necessary; fixed www.d.o BTS URL; reorder mentions of scp to come before FTP, as it is more secure; mention the rsync dupload method; reorder mentions of pandora <-> non-us, canonical name non-us is better; other small corrections

git-svn-id: svn://anonscm.debian.org/ddp/manuals/trunk/developers-reference@1012 313b444b-1b9f-4f58-a734-7bb04f332e8d