Rationalize NA contest mode

Generic message packing and unpacking routines now understand antipode
grid contest messages.  These messages  are now recognized as standard
messages in  message response processing and  dealt with appropriately
when contest mode is selected and applicable (currently FT8 and MSK144
only).

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8062 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

lib/qra64code.f90

@@ -34,7 +34,7 @@ program QRA64code
      msg0=msg                               !Input message
      call chkmsg(msg,cok,nspecial,flip)     !See if it includes "OOO" report
      msg1=msg                               !Message without "OOO"
-     call packmsg(msg1,dgen,itype)          !Pack message into 12 six-bit bytes
+     call packmsg(msg1,dgen,itype,.false.) !Pack message into 12 six-bit bytes
      msgtype=""
      if(itype.eq.1) msgtype="Std Msg"
      if(itype.eq.2) msgtype="Type 1 pfx"
@@ -45,7 +45,7 @@ program QRA64code
 
      call qra64_enc(dgen,sent)              !Encode using QRA64
 
-     call unpackmsg(dgen,decoded)           !Unpack the user message
+     call unpackmsg(dgen,decoded,.false.,'      ') !Unpack the user message
      call fmtmsg(decoded,iz)
      ii=imsg
      write(*,1020) ii,msg0,decoded,itype,msgtype