Fix bytes / kilobytes mismatch that resulted in fewer objects being
cached.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1523272 13f79535-47bb-0310-9956-ffa450edef68
Remove old, incorrect comment

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1523273 13f79535-47bb-0310-9956-ffa450edef68