Absolute necessary .jar files?

[Jon Stevens <jo...@latchkey.com>]

? common/lib/activation.jar
? common/lib/crimson.jar
? common/lib/jaxp.jar
? common/lib/jcert.jar
? common/lib/jdbc2_0-stdext.jar
? common/lib/jnet.jar
? common/lib/jsse.jar
? common/lib/jta-spec1_0_1.jar
? common/lib/ldap.jar
? common/lib/mail.jar
? common/lib/naming-common.jar
? common/lib/naming-resources.jar
? common/lib/tyrex-0.9.7.0.jar
? server/lib/servlets-cgi.jar
? server/lib/servlets-common.jar
? server/lib/servlets-default.jar
? server/lib/servlets-invoker.jar
? server/lib/servlets-manager.jar
? server/lib/servlets-snoop.jar
? server/lib/servlets-ssi.jar
? server/lib/servlets-webdav.jar

Can someone tell me which of these .jar files are absolutely necessary for
Tomcat's operation? Every single one of these .jar files is new since the
last time I updated my local copy of Tomcat (~ beta 8).

I'm not sure anymore which ones are useful and which ones are just fluff.

thanks,

-jon