2. "/A" added to list of optional callsign suffixes.
3. Improved algorithm for measuring error in soundcard sample rates.
4. Optional 5-sec shift of input data, to catch some clock errors.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@274 ab8295b8-cf94-4d9e-aec4-7959e3be5d79