Patch to detect spf +all (assistance requested)

[Gareth]

Been working with someone to create a patch and additional rule for the
spamassassin SPF plugin so that it can detect SPF entries with '+all' which
a lot of spammers now appear to be using.

You can get the current patch from the URL below. However this only works
with mail::SPF::Query and doesn't work with mail::SPF. Is anyone able to
give some assistance in getting this working?
If we do then the plugin author is willing to accept the patch.

http://www.freespamfilter.org/forum/viewtopic.php?p=4600

Thanks