Add possibility to define default VAT accountancy code for purchase

htdocs/admin/compta.php

@@ -148,7 +148,7 @@ print "<br>\n";
 
 // Cas des autres parametres COMPTA_*
 $list=array('COMPTA_PRODUCT_BUY_ACCOUNT','COMPTA_PRODUCT_SOLD_ACCOUNT','COMPTA_SERVICE_BUY_ACCOUNT','COMPTA_SERVICE_SOLD_ACCOUNT',
-'COMPTA_VAT_ACCOUNT','COMPTA_ACCOUNT_CUSTOMER','COMPTA_ACCOUNT_SUPPLIER'
+'COMPTA_VAT_ACCOUNT','COMPTA_VAT_BUY_ACCOUNT','COMPTA_ACCOUNT_CUSTOMER','COMPTA_ACCOUNT_SUPPLIER'
 );
 
 /*$sql = "SELECT rowid, name, value, type, note";

htdocs/compta/journal/purchasesjournal.php

@@ -117,7 +117,7 @@ if ($result)
 	$num = $db->num_rows($result);
 	// les variables
 	$cptfour = (! empty($conf->global->COMPTA_ACCOUNT_SUPPLIER)?$conf->global->COMPTA_ACCOUNT_SUPPLIER:$langs->trans("CodeNotDef"));
-	$cpttva = (! empty($conf->global->COMPTA_VAT_ACCOUNT)?$conf->global->COMPTA_VAT_ACCOUNT:$langs->trans("CodeNotDef"));
+	$cpttva = (! empty($conf->global->COMPTA_VAT_BUY_ACCOUNT)?$conf->global->COMPTA_VAT_BUY_ACCOUNT:$langs->trans("CodeNotDef"));
 
 	$tabfac = array();
 	$tabht = array();