first pass at click to tune for rx. It works OK, but the communication of the click...

first pass at click to tune for rx.  It works OK, but the communication of the click freq sucks so I might try re-writing that bit

git-svn-id: https://svn.code.sf.net/p/freetel/code@1041 01035d8c-6547-0410-b346-abe4f91aad63