tail patch

I've created a patch for the tail.c file of textutils which allows for a 
time less than 1 for specifying refresh delay when following a file with 
-f.  I am however, wondering why this ability wasn't added earlier. 
 This option is available for other utilities such as top.

Please let me know if you would like the patched tail.c file, or if not, 
why this option is decidedly not included in tail.

Thanks,

Augey Mikus