-Changed the type of parent_id of account.account from many2many to many2one and changes account charts accordingly. -Bugfix: solved error of no period_ids and misc. changes in wizard_fiscalyear_close.py -Bugfix: solved error of fiscal year and period in report-account_balance.py bzr revid: qdp@tinyerp.com-20080729120906-zin2q9epxgq8xos9