Add column evenunsubscribe for emailing

htdocs/install/mysql/migration/17.0.0-18.0.0.sql

@@ -387,3 +387,6 @@ ALTER TABLE llx_product_fournisseur_price_log ADD INDEX idx_product_fournisseur_
 ALTER TABLE llx_bordereau_cheque ADD COLUMN label varchar(255) AFTER ref;
 
 ALTER TABLE llx_c_email_templates add COLUMN defaultfortype smallint DEFAULT 0;
+
+ALTER TALBE llx_mailing ADD COLUMN evenunsubscribe smallint DEFAULT 0;
+

htdocs/install/mysql/tables/llx_mailing-mailing.sql

@@ -33,6 +33,7 @@ create table llx_mailing
   body				mediumtext,
   bgcolor			varchar(8),                          -- Backgroud color of mailing
   bgimage			varchar(255),                        -- Backgroud image of mailing
+  evenunsubscribe   smallint       DEFAULT 0, 			 -- If 1, email will be send event if recipient has opt-out to emailings 
   cible				varchar(60),
   nbemail			integer,
   email_from		varchar(160),                        -- Email address of sender