* merge methods state_change and state_upgrade into state_update * raise an exception when there is an unmet dependency bzr revid: christophe@tinyerp.com-20080820120054-1l2fdexs1lty7nk8
* merge methods state_change and state_upgrade into state_update * raise an exception when there is an unmet dependency bzr revid: christophe@tinyerp.com-20080820120054-1l2fdexs1lty7nk8