Impacted versions:
10.0
Steps to reproduce:
1. Create Customer Invoice and Validate
2. Make Payments on Payments screen and confirm
3. Open Manual Payments and Invocies and try to reconcile hitting CTRL-Enter for mass reconciliation

Current behavior:
Odoo server error raised with traceback
File "/home/odoo/runbot/extra/runbot/static/build/188623-10-0-347494/odoo/addons/account/models/account_move.py", line 729, in process_reconciliations
    self.process_reconciliation(datum['mv_line_ids'], datum['new_mv_line_dicts'])
TypeError: process_reconciliation() takes exactly 2 arguments (3 given)

Expected behavior:

Video/Screenshot link (optional):
![image](https://cloud.githubusercontent.com/assets/17149532/21532189/3596954a-cd4e-11e6-94fa-be2195bd9f7b.png)


""" Automatically create a journal entry to book the exchange rate difference.
            That new journal entry is made in the company `currency_exchange_journal_id` and one of its journal
            items is matched with the other lines to balance the full reconciliation.
        """
        for rec in self:
            if not rec.company_id.currency_exchange_journal_id:
                raise UserError(_("You should configure the 'Exchange Rate Journal' in the accounting settings, to manage automatically the booking of accounting entries related to differences between exchange rates."))
            if not self.company_id.income_currency_exchange_account_id.id:
                raise UserError(_("You should configure the 'Gain Exchange Rate Account' in the accounting settings, to manage automatically the booking of accounting entries related to differences between exchange rates."))
            if not self.company_id.expense_currency_exchange_account_id.id:
                raise UserError(_("You should configure the 'Loss Exchange Rate Account' in the accounting settings, to manage automatically the booking of accounting entries related to differences between exchange rates."))
            move_vals = {'journal_id': rec.company_id.currency_exchange_journal_id.id}
            # Th
            # of 
            # re
            if move_date > rec.company_id.fiscalyear_lock_date:
                move_vals['date'] = move_date
            move = rec.env['account.move'].create(move_vals)
            amount_diff = rec.company_id.currency_id.round(amount_diff)
            diff_in_currency = currency.round(diff_in_currency)
            line_to_reconcile = rec.env['account.move.line'].with_context(check_move_validity=False).create({
                'name': _('Currency exchange rate difference'),