Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56236
Add issue number

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1577489 13f79535-47bb-0310-9956-ffa450edef68
Fix trailing whitespace. Sorry for the noise.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1577492 13f79535-47bb-0310-9956-ffa450edef68
Start harmonizing exception types (todo: same thing for completion handlers).

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1577501 13f79535-47bb-0310-9956-ffa450edef68