<fileset>
(dir becomes srcdir) as well as the nested
<include>, <exclude> and
<patternset> elements.
-src, classpath, sourcepath,
+srcdir, classpath, sourcepath,
bootclasspath and extdirs<javac>'s srcdir, classpath,
sourcepath, bootclasspath, and
extdirs attributes are
path-like structures
and can also be set via nested
-<src>,
+<src> (note the different name!),
<classpath>,
<sourcepath>,
<bootclasspath> and