Use named initializers and list the items on a separate line each.

This also drops the trailing period from the log message, which matches the
changes to core.

This enables race-free kicking using socket+SIGTERM.

This prevents startup failures if ssl_ca has a large number of certificates.

Attempting to pipeline any commands with the AUTHENTICATE command resulted
in crash.

Fixes:
Panic: file istream.c: line 317 (i_stream_read_memarea): assertion failed: (old_size <= _stream->pos - _stream->skip)

Core is using {old,new}_foo for the RENAME IMAP command event, so let's
follow suit.

Before, only storage errors had the "error" field set.

Before, only storage errors had the "error" field set.

managesieve: managesieve-quota - Add "error" field for the command event when the quota check fails.

This makes more sense with the managesieve_command_name field.