patch for /check/referer

the attached patch try's to do some thing about Dan Connolly's comments
about /check/referer.

it make the shown URI a link to the URI ( for bookmarking),
puts a note in about using /check/referer, takes note of whether
/check/referer is being used and if so removes the line about
bookmarking the current page.

ps i hope to be helping out with the validator alot :)

Steven Drake <sdrake@ihug.co.nz>
      1: Linux - will work for fish.
      2: The Linux penguin - looks stuffed to the brim with herring.
( make your own conclusions )