sync65: added call to smooth for improved sync in mode JT65C.
added +2 dB to SNR estimates for JT65C.
wsjt65: cleaned up some display details of decoded lines
short65: added calls to smooth for improved shorthand decodes in JT65C.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@217 ab8295b8-cf94-4d9e-aec4-7959e3be5d79