The current cli installer patch (1.9) has some bugs – I've posted some fixes

The fix to cliupgrade so that it sets release properly:
http://dev.laptop.org/git/users/martin/moodle.git/commit/?h=mdl19-xs&id=189c731aed2ebb959107536de20ddc8c660e9ea2

The fix to backuplib upgrades, so that it checks whether we're interactive or not
http://dev.laptop.org/git/users/martin/moodle.git/commit/?h=mdl19-xs&id=9d3f649f0b55267a0027b799c3a4a8dcf1a3283d

This is also handy for anyone using cliupgrade:
http://dev.laptop.org/git/users/martin/moodle.git/commit/?h=mdl19-xs&id=49d9375562d808a7e6d50f7e1ce84d76eeaf91c5

Discussion at http://moodle.org/mod/forum/discuss.php?d=122347