Patch to handle "cf(sqrt(8))" as cf of sqrt

Before the patch, "sqrt(8)" was handled by cf as
2*sqrt(2) and thus the cflength promise was broken:

  cf(sqrt(8)); /* 3 */

with the patch it is handled as sqrt:

  cf(sqrt(8)); /* [2, 1, 4] */

<http://sourceforge.net/tracker/?func=detail&aid=3431927&group_id=4933&atid=304933>;

Btw, apparently, this mailing list cannot be found from

  <http://sourceforge.net/projects/maxima/>; ==> Mailing Lists

I guess it is a good idea to somehow mention it.

-- 
Regards,
ASK