Add support for unsigned int64 in SQL-parameters. Using uInt64 is currently troublesome, as this needs to be done via IntToStr or other tricks.

This makes the code harder to write and also clutters the list of param's - having some of them are dome directly in the SQL-text and having other's in the param-list.

For me (and many other, I guess), the use of unsigned uInt64's gets more and more widespread, eg. in IP-numbers as INETATON/INETNTOA in big data.