[SDL] SDL Alpha patch

[CRV§ADER/KY]

>> Here is a patch I've worked on the past couple
>> days to improve the accuracy of alpha-blits...
>> It certainly isn't yet ready for prime time,
>> but I was wondering what kind of affect it
>> had on performance on different [...]
>
>:( Base64... sorry guys.  If I knew yahoo was going to
>base64 it I would have gzipped it... If anyone has
>trouble with base64, and wants it as ASCII, email me
>off list.

Never put attachments to mail you send to mailing lists if they're longer than 30 lines, or if they're not (like 
in this case) essential for the understanding of the mail. Much better upload them on your site and then give a 
link.