Align documentation of DBCP examples to match changes from DBCP 1 -> DBCP 2. Specifically, change "maxActive" -> "maxTotal" and "maxWait" -> "maxWaitMillis" in all examples.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1574541 13f79535-47bb-0310-9956-ffa450edef68