Review of r1440096 (r1440095)
Include the exception in the error message if the parsing fails.
digester.parse() is called several times in HostConfig.java, so I am fixing the rest of those calls.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1441342 13f79535-47bb-0310-9956-ffa450edef68
Correct typo, reported at comments.a.o

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1441348 13f79535-47bb-0310-9956-ffa450edef68