Fix: compatibility with postgesql

htdocs/install/mysql/migration/2.6.0-2.7.0.sql

@@ -458,6 +458,7 @@ alter table llx_commandedet modify special_code integer UNSIGNED DEFAULT 0;
 alter table llx_facturedet modify special_code integer UNSIGNED DEFAULT 0;
 alter table llx_propaldet modify special_code integer UNSIGNED DEFAULT 0;
 alter table llx_societe modify special_code integer NULL;
+alter table llx_c_forme_juridique code integer UNIQUE NOT NULL;
 
 ALTER TABLE llx_adherent_options ADD INDEX uk_adherent_options (adhid);
 ALTER TABLE llx_bank_class ADD UNIQUE INDEX idx_bank_class_lineid (lineid);

htdocs/install/mysql/tables/llx_c_forme_juridique.sql

@@ -22,7 +22,7 @@
 create table llx_c_forme_juridique
 (
   rowid      	integer       AUTO_INCREMENT PRIMARY KEY,
-  code       	varchar(12)   UNIQUE NOT NULL,
+  code       	integer       UNIQUE NOT NULL,
   fk_pays    	integer       NOT NULL,
   libelle    	varchar(255),
   isvatexempted	tinyint DEFAULT 0  NOT NULL,