Add missing vat_src_code on recurring invoices

htdocs/install/mysql/migration/5.0.0-6.0.0.sql

@@ -141,6 +141,8 @@ ALTER TABLE llx_societe_remise_except ADD CONSTRAINT fk_soc_remise_fk_invoice_su
 ALTER TABLE llx_societe_remise_except ADD CONSTRAINT fk_societe_remise_fk_invoice_supplier        FOREIGN KEY (fk_invoice_supplier)      REFERENCES llx_facture_fourn (rowid);
 ALTER TABLE llx_societe_remise_except ADD CONSTRAINT fk_societe_remise_fk_invoice_supplier_source FOREIGN KEY (fk_invoice_supplier)      REFERENCES llx_facture_fourn (rowid);
 
+ALTER TABLE llx_facture_rec ADD COLUMN vat_src_code	varchar(10) DEFAULT '';
+
 UPDATE llx_const set value='moono-lisa' where value = 'moono' AND name = 'FCKEDITOR_SKIN';
 
 ALTER TABLE llx_product_price ADD COLUMN default_vat_code	varchar(10) after tva_tx;

htdocs/install/mysql/tables/llx_facture_rec.sql

@@ -32,6 +32,7 @@ create table llx_facture_rec
   remise_percent     real     DEFAULT 0,
   remise_absolue     real     DEFAULT 0,
   
+  vat_src_code		 varchar(10)  DEFAULT '',			-- Vat code used as source of vat fields. Not strict foreign key here.
   tva                double(24,8)     DEFAULT 0,
   localtax1			 double(24,8)     DEFAULT 0,           -- amount localtax1
   localtax2          double(24,8)     DEFAULT 0,           -- amount localtax2