Revision 273428

<delete> doesn't catch all cases where the implicit fileset gets used
(and may thus ignore some attributes or nested selectors).

On a side-note.  I found it amusing to read

 * <p>Currently Delete extends MatchingTask.  This is intend <i>only</i>
 * to provide backwards compatibility for a release.  The future position
 * is to use nested filesets exclusively.</p>

in Delete.java.  This is sticking in there since almost exactly two
years ago.  Revision 1.8 2000-10-04.  Revision 1.9 went into Ant 1.2. 8-)