Opening entries on foreign currency accounts are computing a wrong value

If you create opening entries for a past fiscal year (FY2012) but have entries with a multicurrency account in FY2011, the opening entry for FY2013 will sum all move lines from 2012 for system currency (as wanted), and all move lines until 2013-01-01 for account currency (not wanted).

This means you get a much larger value in account currency than in system currency.

The issue is in the method data_save() in addons/account/wizard/account_fiscalyear_close.py; the domain for the lines uses all fiscal years before the "new" one, not just one. I'll add a branch with a fix (using the method "foreign_balance", which is correct).