JIRA TRAFODION-1798 (ddl xns) and few other fixes, details below.-- support for sql part of ddl xns. Section 1 of JIRA TRAFODION-1798-- cqd ddl_transactions to enable or disable ddl xns. Default is currently off. Once it is tested, it will be turned on. Dev regressions are run with cqd set to ON-- get stmts run with read committed to get changes in current xns-- support for where preds with get stmts-- scan to pass in transid even if running with read uncommitted access. This enables rows modified in current xn to be returned.-- cleanup no longer return multiple duplicate error messages if objects id is not found.-- cleanup no longer includes internallay created schemas (_HV_ , _HB_) during cleanup operations.-- Correct error msg was not getting returned if an invalid index existed in table and the same index was created again.-- init traf, drop md views was giving an error if views didnt exist. That has been fixed.-- regressions with -diff option now show original file timestamps instead of the timestamp when the diff command was run.