queries.

NullResource.

in OFS package

doing a .append().  (XXX This is necessary since
manage_setLocalRoles() accepts whatever sequence the user passes in -
which should be fixed...)

Fixed a bug in the dtml-var tag handling of the 'null' attribute. Before null would only work correctly if there was also a 'fmt' attribute. Now null correctly works with non-zero false values when there isn't a 'fmt' option.

break for some older DAs.

it's absence was causing an exception.  (Will be durn hard to make
tests for this kind of thing, sigh.)

(This is in the trunk, the last was in the 2_2 branch.)