I've just committed additional enhancements to DB2 support in MediaWiki as
r106480. This builds on the code developed by André and other student
volunteers at Minho University which I committed in April as r85885.
I'm hoping that this will make the 1.19 cutoff, as it includes updates to
the DB2 database schema to address changes in 1.18 and 1.19. I think the
changes are reasonable, and I've done my best to look the code over for
clarity and adherence to style guidelines before committing.