"SHA256ify" commits

[Darren Pilgrim]

From: Doug Barton [mailto:dougb at FreeBSD.org] 
> 
[redirect from cvs-all; info about the addition of SHA256 bits to
bsd.port.mk]
> 
> > What conditions result in the "manually checked and updated"
> > commit? 
> 
> Not sure what you're asking here.

Most of Edwin's commits just have "SHA256ify" as the comment, but a few
include additional comments indicating manual intervention.  Some examples:

ports/archivers/ucl/distinfo v1.6
ports/audio/aureal-kmod/distinfo v1.9

I was wondering what the significance of the comment was and why certain
ports were seperated from the main commit.