For some reason, this partial sql command didn't work in your case:
alter table tiki_pages add column version_minor int(8) NOT NULL DEFAULT 0;
It did work for me in a test on a 2.0 db (on GNU/Linux), but in case it doesn't work for you (case conflict? most upgrade scripts use upper case commands except this, it seems), you can try with this:
ALTER TABLE `tiki_pages` ADD `version_minor` int(8) NOT NULL default '0' AFTER `version`;
which was my initial patch, until I saw that there was already the previous one in lower case already in
Please, report back if the lower case command doesn't work for you.