Informix versions < 10 use 'FIRST' keyword instead of 'LIMIT'
Still supported in versions 10+
Merge pull request #167 from pparidans/informix-v9-support

Informix versions < 10 use 'FIRST' keyword instead of 'LIMIT'
Fix set visiting spec
Merge pull request #317 from dimko/patch-2

Fix set visiting spec
allow adding sql comments to easily track down where a query came from in logs / process list