Backport JBAS-7479 (once fixed on AS branches) to EAP.

A Tomcat/JBossWeb class was copied into the AS source tree under a different name and a later fix was not applied to the copy. This prevents the "checkInterval" init-param being explicitly set to 0 in jboss-web.deployer's web.xml, and causes it to be set to 300 if you try. A work-around is to not set it at all, which defaults to 0 (despite the warning message to the contrary).

WARN [org.jboss.web.tomcat.service.jasper.JspServletOptions] Warning: Invalid value for the initParam checkInterval. Will use the default value of "300" seconds