me.  Added a footer to every page.  Add some options to do things like
display checkboxes instead of scrolling lists, and a new formatting
for email diffs, and show list items capitalized instead of all upper
case.

one bug matching a keyword when there really are zero.

authority maintain a list of keywords, and users can associate any
keyword with any bug.

The new functionality won't appear until at least one keyword is
defined.

Note that you *must* run the "checksetup.pl" script after updating
this change, in order to create the new required tables "keywords" and
"keyworddefs".