Bug#268777: debian-policy: the underground "url" field in package descriptions

[Dan Jacobson <jidanni@jidanni.org>]

Package: debian-policy
Version: 3.6.1.1
Severity: wishlist

/usr/share/doc/debian-policy/policy.txt.gz doesn't mention any "url"
field. Nonetheless,
$ grep-available -F url . -s url|wc -l
25 packages use it!
Indeed, it is even "url" and not "Url", capitalized like the other
fields, showing its wetback nature.
So it should either be documented, or those packages should stop using
it.

P.S., using -s Url makes it look good, which is a grep-dctrl bug, so
be sure to use -s url... (which forces lowercase which is a bug too.)