Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56441
Minor improvements for r1590285:
Do not omit stacktrace on InvocationTargetException in a getter.
Better wording for changelog.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1590329 13f79535-47bb-0310-9956-ffa450edef68