[IMP] Improve code in yml.

bzr revid: bth@tinyerp.com-20130218075653-nikwao3pc037st2p

addons/purchase/test/process/merge_order.yml

@@ -2,7 +2,7 @@
   In order to merge RFQ, I merge two RFQ which has same supplier and check new merged order.
 -
   !python {model: purchase.order}: |  	
-    context = {"mail_create_nolog" : True }
+    context.update({"mail_create_nolog" : True })
     new_id = self.do_merge(cr, uid, [ref('purchase_order_4'), ref('purchase_order_7')], context=context)
     order3 = self.browse(cr, uid, ref('purchase_order_4'))
     order7 = self.browse(cr, uid, ref('purchase_order_7'))

addons/purchase_requisition/test/purchase_requisition.yml

@@ -45,7 +45,7 @@
     partner_id: base.res_partner_12
 - 
   !python {model: purchase.requisition.partner}: |  	
-    context = {"mail_create_nolog" : True }
+    context.update({"mail_create_nolog" : True })
     self.create_order(cr, uid, [ref("requisition_partner_0")], context=context)
 -
   I check that the RFQ details which created for supplier.