Improve MySQL and DB2 search performance
- by only extracting values from the XML for the rows that will be shown on the summary page
- this was already done in the Oracle version of the SQL
Fix NoClassDefFoundError for DelegatingResultSet
- different casting
    - for prepared statement, we were casting to org.apache.tomcat.dbcp.dbcp.DelegatingPreparedStatement
    - but for result sets, we were casting to org.apache.commons.dbcp.DelegatingResultSet
    - not sure how this could have worked, changing to org.apache.tomcat.dbcp.dbcp.DelegatingResultSet
- rename class to SQLProcessorOracleTomcatDelegate, since this is only one we have for Tomcat
- use getInnermostDelegate
    - was done for the prepared statement, but not the result set
    - for the prepared statement, we were recursing, which getInnermostDelegate avoids
- clean up and simplify the code