Add patches over sale, purchase and stock_split modules

issue6521002_1.diff

@@ -0,0 +1,14 @@
+Index: trytond/trytond/modules/stock_split/stock.py
+===================================================================
+
+--- a/trytond/trytond/modules/stock_split/stock.py
++++ b/trytond/trytond/modules/stock_split/stock.py
+@@ -59,6 +59,7 @@
+                         'uom': uom.id,
+                         }))
+             remainder -= quantity
++            remainder = Uom.round(remainder, uom.rounding)
+             if count:
+                 count -= 1
+         assert remainder >= 0
+

issue8381002_20002.diff

@@ -0,0 +1,25 @@
+Index: trytond/trytond/modules/sale/sale.py
+===================================================================
+
+--- a/trytond/trytond/modules/sale/sale.py
++++ b/trytond/trytond/modules/sale/sale.py
+@@ -1347,7 +1347,8 @@
+                     old_invoice_line.quantity, self.unit)
+         invoice_line.quantity = quantity
+ 
+-        if invoice_line.quantity <= 0.0:
++        rounding = self.unit.rounding if self.unit else 0
++        if invoice_line.quantity < rounding:
+             return []
+         invoice_line.unit = self.unit
+         invoice_line.product = self.product
+@@ -1418,7 +1419,7 @@
+             if move.id not in skip_ids:
+                 quantity -= Uom.compute_qty(move.uom, move.quantity,
+                     self.unit)
+-        if quantity <= 0.0:
++        if quantity < self.unit.rounding:
+             return
+         if not self.sale.party.customer_location:
+             self.raise_user_error('customer_location_required', {
+

issue8391002_40001.diff

@@ -0,0 +1,25 @@
+Index: trytond/trytond/modules/purchase/purchase.py
+===================================================================
+
+--- a/trytond/trytond/modules/purchase/purchase.py
++++ b/trytond/trytond/modules/purchase/purchase.py
+@@ -1220,7 +1220,8 @@
+                         old_invoice_line.quantity, self.unit)
+         invoice_line.quantity = quantity
+ 
+-        if invoice_line.quantity <= 0.0:
++        rounding = self.unit.rounding if self.unit else 0
++        if invoice_line.quantity < rounding:
+             return []
+         invoice_line.unit = self.unit
+         invoice_line.product = self.product
+@@ -1275,7 +1276,7 @@
+             if move not in skip:
+                 quantity -= Uom.compute_qty(move.uom, move.quantity,
+                     self.unit)
+-        if quantity <= 0.0:
++        if quantity < self.unit.rounding:
+             return
+         if not self.purchase.party.supplier_location:
+             self.raise_user_error('supplier_location_required', {
+

series

@@ -31,3 +31,6 @@ issue7461002_1.diff
 issue6441002_20001.diff
 issue6451002_60001.diff
 issue11331003_1_10001.diff
+issue6521002_1.diff
+issue8391002_40001.diff
+issue8381002_20002.diff