The JSP example use an old version of JSTL and should be updated to 1.2.3
Fixed in trunk by http://svn.apache.org/viewvc?view=revision&revision=1662736
The change has been back-ported and will be included in 8.0.21 and 7.0.60
Backported to Tomcat 6 and will be included in 6.0.44. - r1671300