WvDBus: better error reporting.
When printing REPLY DBus messages, print ERR#xx instead of REPLY#xx if it's
an error message. In WvDBusServer, don't mark a message as "handled" if
there's no matching connection for a service; return false and let another
handler try to handle it. When everything has failed, send back a
NameHasNoOwner error instead of just failing silently; this way clients can
recover gracefully.
git-svn-id: file:///home/apenwarr/alumnit-svn/public/branches/wvstreams-ng@11859 6619c942-59fa-0310-bf43-a07aaa81d9ac