Fix: Dir with linked files was not renamed when invoices was renamed

with its final ref (linked files were lost)
Fix: Ref visible into message was wrong.
Fix: Bad counting of product/service available

htdocs/fourn/class/fournisseur.facture.class.php

@@ -855,6 +855,45 @@ class FactureFournisseur extends CommonInvoice
                 }
             }
 
+            if (! $error)
+            {
+            	$this->oldref = '';
+
+            	// Rename directory if dir was a temporary ref
+            	if (preg_match('/^[\(]?PROV/i', $this->ref))
+            	{
+            		// On renomme repertoire facture ($this->ref = ancienne ref, $num = nouvelle ref)
+            		// afin de ne pas perdre les fichiers attaches
+            		$facref = dol_sanitizeFileName($this->ref);
+            		$snumfa = dol_sanitizeFileName($num);
+
+            		$dirsource = $conf->fournisseur->facture->dir_output.'/'.get_exdir($this->id,2).$facref;
+            		$dirdest = $conf->fournisseur->facture->dir_output.'/'.get_exdir($this->id,2).$snumfa;
+            		if (file_exists($dirsource))
+            		{
+            			dol_syslog(get_class($this)."::validate rename dir ".$dirsource." into ".$dirdest);
+
+            			if (@rename($dirsource, $dirdest))
+            			{
+            				$this->oldref = $facref;
+
+            				dol_syslog("Rename ok");
+            				// Suppression ancien fichier PDF dans nouveau rep
+            				dol_delete_file($conf->fournisseur->facture->dir_output.'/'.get_exdir($this->id,2).$snumfa.'/'.$facref.'*.*');
+            			}
+            		}
+            	}
+            }
+
+            // Set new ref and define current statut
+            if (! $error)
+            {
+            	$this->ref = $num;
+            	$this->statut=1;
+            	//$this->date_validation=$now; this is stored into log table
+            }
+
+            // Triggers call
             if (! $error)
             {
                 // Appel des triggers

htdocs/fourn/facture/fiche.php

@@ -114,8 +114,18 @@ elseif ($action == 'confirm_valid' && $confirm == 'yes' && $user->rights->fourni
     $object->fetch($id);
     $object->fetch_thirdparty();
 
+    $qualified_for_stock_change=0;
+    if (empty($conf->global->STOCK_SUPPORTS_SERVICES))
+    {
+    	$qualified_for_stock_change=$object->hasProductsOrServices(2);
+    }
+    else
+    {
+    	$qualified_for_stock_change=$object->hasProductsOrServices(1);
+    }
+
     // Check parameters
-    if (! empty($conf->global->STOCK_CALCULATE_ON_SUPPLIER_BILL) && $object->hasProductsOrServices(1))
+    if (! empty($conf->global->STOCK_CALCULATE_ON_SUPPLIER_BILL) && $qualified_for_stock_change)
     {
         $langs->load("stocks");
         if (! $idwarehouse || $idwarehouse == -1)