Merge 0.11->trunk

mod_storage_sql: Fix check for deletion limits (fixes #1494) The check was only performed if sql_manage_tables was set to true (the default) It should always be performed

util.startup: Break out command line argument parsing into util.argparse This will allow using it from other places such as prosodyctl sub-commands and plugins

net.resolvers.service: Fix resolving of targets with multiple IPs Each basic resolver was only used once and not kept around to try any IP addresses but the first one found.

net.server_epoll: Reduce log level of TLS handshake errors to debug These are triggered all the time by random HTTPS connections, so they are mostly just useless noise. When you actually do need them, you probably have debug logging enabled too, since these messages are fairly useless without more context.

mod_s2s: Fix typo in comment [codespell]

Merge 0.11->trunk

mod_muc: Allow control over the server-admins-are-room-owners feature (see #1174)

stanza_router: only fire pre-stanza if firing other preevents (e.g. for c2s sessions)

mod_admin_telnet: Avoid indexing missing socket (thanks tmolitor) if `sock` was nil it would still proceed with SNI and ALPN checks