fdo#84073: change ODBC/JDBC escapes to lowercase

Change-Id: I19ce3acb9575fbef8273bbd84cb4dc322e101ac8
Reviewed-on: https://gerrit.libreoffice.org/11885
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>