[Spambayes] More HTML strippage.

[Neil Schemenauer]

Neil Schemenauer wrote:
> I think it would be better to generate:
> 
>     header:num_recip_1
>     header:num_recip_2
>     header:num_recip_3
>     header:num_recip_4
>     ...
>     header:num_recip_21
> 
> We should probably do the same thing when counting headers.  I'll give
> it a try.

Not so good.  This seems to work good though:

    to:2**4

IOW, log2(n).  The idea is that going from 8 to 16 is about that same as
going from 1 to 2.  I wonder if we should to this for 'skip:' as well.

  Neil