You're right! Both JSP precomilations and runtime compilations work as expected (with respect to JARs in lib/applibs) in the upcoming 9.1.1 release. In 9.1_02, only runtime compilations work as expected.
[Message sent by forum member 'jluehe' (jluehe)]
http://forums.java.net/jive/thread.jspa?messageID=300480