Complete first pass of try-with-resources

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1582064 13f79535-47bb-0310-9956-ffa450edef68
Update changelog for try-with-resources

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1582066 13f79535-47bb-0310-9956-ffa450edef68