Merge 1.9 changes into Head
Making changes in postgres db upgrade script such that instead of JDBC, SQL is used for updating the DB
Modified code such that nodedata column in xml_index is not created and used. So now we are using the same logic for using xml_index which was used for metacat release 1.4
Added new database upgrade script for postgres.Modified the database upgrade script for oracleAdded comment to DBquery.javaFixed a bug in xmltables.sql