Move golay23 into codec2 library.

git-svn-id: https://freetel.svn.sourceforge.net/svnroot/freetel/fdmdv2@1295 01035d8c-6547-0410-b346-abe4f91aad63
made filter dialog a little larger as ok/cancel wasbing cropped

git-svn-id: https://freetel.svn.sourceforge.net/svnroot/freetel/fdmdv2@1296 01035d8c-6547-0410-b346-abe4f91aad63