Comment 2 for bug 1288490

Ideally, now that the htdocs/lib/db/upgrade.php file is getting quite long it would be neater if we could split it up into versions

so have:
...
htdocs/lib/db/upgrade/1_7.php
htdocs/lib/db/upgrade/1_8.php
htdocs/lib/db/upgrade/1_9.php
...

we could possibly get it so that if something needs to be backported from 1_9 to 1_8 we only need to add the code change once somehow. [ I've not worked out how yet :) ]