Fix: [ bug #1761 ] SQL error when installing 3.7 with PostgreSQL

htdocs/install/mysql/tables/llx_usergroup_extrafields.sql

@@ -21,6 +21,6 @@ CREATE TABLE IF NOT EXISTS llx_usergroup_extrafields (
   tms                       timestamp,
   fk_object                 integer NOT NULL,
   import_key                varchar(14)                          		-- import key
-) ENGINE=InnoDB ;
+)ENGINE=innodb;