It seems that now the YiiFirebird extension
https://github.com/robregonm/YiiFirebird
is stable enough (please let me know it is not so) for merge in YiiFramework master repo.
Now, the next step is to create the automated tests for this extension. Volunteers? Ideas?
We need to add a "tests" directory for that purpose in our local repo before committing Yii master repo.
Example: https://github.com/yiisoft/yii/blob/master/tests/framework/db/schema/CPostgresTest.php

Comments can be added into this issue
https://github.com/robregonm/YiiFirebird/issues/7