Fix Ingres problems with queries with have both an LIMIT and OFFSET clause as we...

Fix Ingres problems with queries with have both an LIMIT and OFFSET clause as we need to reorder this query for Ingres to be understandable we need some more regexp magic for now. Lets make things exentsible and allow for multiple regexps all being fired on a query transforming it into the query to execute. Dropped the encoding check which is for postgresql but not interesting for Ingres now we use VARBYTE and not VARCHAR.