Add 8.0.3 release date

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1567653 13f79535-47bb-0310-9956-ffa450edef68
Tweak error message to show actual file name

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1567659 13f79535-47bb-0310-9956-ffa450edef68