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)


if aml.currency_id and aml.currency_id == currency:
                        total_amount_currency += aml.amount_currency
                    elif partial_rec.currency_id and partial_rec.currency_id == currency:
                        #if 
                        #cur
                        #aml
                        total_amount_currency += aml.company_id.currency_id.with_context(date=aml.date).compute(aml.balance, partial_rec.currency_id)
                for x in aml.matched_debit_ids | aml.matched_credit_ids:
                    partial_rec_set[x] = None
        partial_rec_ids = [x.id for x in partial_rec_set.keys()]
        aml_ids = aml_set.ids
        #the
        digits_rounding_precision = aml_set[0].company_id.currency_id.rounding
        if (currency and float_is_zero(total_amount_currency, precision_rounding=currency.rounding)) or float_compare(total_debit, total_credit, precision_rounding=digits_rounding_precision) == 0:
            exchange_move_id = False
            exchange_partial_rec_id = False
            if currency and aml_to_balance:
                #eve
                rate_diff_aml, rate_diff_partial_rec = partial_rec.create_exchange_rate_entry(aml_to_balance, total_debit - total_credit, total_amount_currency, currency, maxdate)
                aml_ids.append(rate_diff_aml.id)
                partial_rec_ids.append(rate_diff_partial_rec.id)
                exchange_move_id = rate_diff_aml.move_id.id
                exchange_partial_rec_id = rate_diff_partial_rec.id
            #mar
            self.env['account.full.reconcile'].with_context(check_move_validity=False).create({
                'partial_reconcile_ids': [(4, p_id) for p_id in partial_rec_ids],
                'reconciled_line_ids': [(4, a_id) for a_id in aml_ids],
                'exchange_move_id': exchange_move_id,
                'exchange_partial_rec_id': exchange_partial_rec_id,
            })