Also added Tx status to status UDP message.
Added the above features to the reference UDP server
message_aggregator.
Merged from the wsjtx-1.5 branch.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5334 ab8295b8-cf94-4d9e-aec4-7959e3be5d79