buildroot

ttcp: fix url, rename patch

 - fix download url : isn't available on previous ftp, use an other one
   instead
 - add version according to source code version
 - rename and clean patch according to patch policy

[Peter: adjust upstream URL in Config.in]
Signed-off-by: Arnaud Aujon <arnaud.aujon@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>