Fix HTML entity

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1631451 13f79535-47bb-0310-9956-ffa450edef68
Fix Java 8 Javadoc errors in org.apache.tomcat.dbcp

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1631454 13f79535-47bb-0310-9956-ffa450edef68