Add procedures to mitigate installation errors on update

data/schemas/charmapdb/cp_itemshop.20081109093448.sql

@@ -1 +1,7 @@
-ALTER TABLE `cp_itemshop` ADD `use_existing` TINYINT NOT NULL DEFAULT '0' AFTER `info`;
+DROP PROCEDURE IF EXISTS cp_itemshop_20081109093448;
+CREATE PROCEDURE cp_itemshop_20081109093448() BEGIN
+    DECLARE CONTINUE HANDLER FOR 1060 BEGIN END;
+    ALTER TABLE `cp_itemshop` ADD `use_existing` TINYINT NOT NULL DEFAULT '0' AFTER `info`;
+END;
+CALL cp_itemshop_20081109093448();
+DROP PROCEDURE cp_itemshop_20081109093448;

data/schemas/charmapdb/cp_itemshop.20090104190020.sql

@@ -1 +1,7 @@
-ALTER TABLE `cp_itemshop` ADD `category` INT(11) NULL AFTER `nameid`;
+DROP PROCEDURE IF EXISTS cp_itemshop_20090104190020;
+CREATE PROCEDURE cp_itemshop_20090104190020() BEGIN
+    DECLARE CONTINUE HANDLER FOR 1060 BEGIN END;
+    ALTER TABLE `cp_itemshop` ADD `category` INT(11) NULL AFTER `nameid`;
+END;
+CALL cp_itemshop_20090104190020();
+DROP PROCEDURE cp_itemshop_20090104190020;

data/schemas/charmapdb/cp_redeemlog.20081001054354.sql

@@ -1,3 +1,8 @@
+DROP PROCEDURE IF EXISTS cp_redeemlog_20081001054354;
+CREATE PROCEDURE cp_redeemlog_20081001054354() BEGIN
+    DECLARE CONTINUE HANDLER FOR 1060 BEGIN END;
 ALTER TABLE `cp_redeemlog`
 	ADD `credits_before` INT( 10 ) NOT NULL ,
-	ADD `credits_after` INT( 10 ) NOT NULL;
+	ADD `credits_after` INT( 10 ) NOT NULL;END;
+CALL cp_redeemlog_20081001054354();
+DROP PROCEDURE cp_redeemlog_20081001054354;