Add System to Config table

db/zm_create.sql.in

@@ -39,6 +39,7 @@ CREATE TABLE `Config` (
   `Help` text,
   `Category` varchar(32) NOT NULL default '',
   `Readonly` tinyint(3) unsigned NOT NULL default '0',
+  `System` BOOLEAN NOT NULL DEFAULT FALSE,
   `Requires` text,
   PRIMARY KEY (`Name`)
 ) ENGINE=@ZM_MYSQL_ENGINE@;

db/zm_update-1.37.15.sql

@@ -0,0 +1,20 @@
+--
+-- Update Config table to have System BOOLEAN field
+--
+
+SELECT 'Checking for System in Config';
+SET @s = (SELECT IF(
+  (SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE table_name = 'Config'
+  AND table_schema = DATABASE()
+  AND column_name = 'System'
+  ) > 0,
+"SELECT 'Column System already exists in Config'",
+"ALTER TABLE `Config` ADD COLUMN `System` BOOLEAN NOT NULL DEFAULT FALSE AFTER `Private`"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;
+
+