Implement global loot system Fixes #619

This should allow us to emulate lives global tables

The options available to filter tables are min_level, max_level, race,
rare, raid, race, class, bodytype, and zone.

race, class, bodytype, and zone are a pipe | separated list of IDs

utils/sql/db_update_manifest.txt

@@ -372,6 +372,7 @@
 9116|2017_12_16_GroundSpawn_Respawn_Timer.sql|SHOW COLUMNS FROM `ground_spawns` WHERE Field = 'respawn_timer' AND Type = 'int(11) unsigned'|empty|
 9117|2018_02_01_NPC_Spells_Min_Max_HP.sql|SHOW COLUMNS FROM `npc_spells_entries` LIKE 'min_hp'|empty|
 9118|2018_02_04_Charm_Stats.sql|SHOW COLUMNS FROM `npc_types` LIKE 'charm_ac'|empty|
+9119|2018_02_10_GlobalLoot.sql|SHOW TABLES LIKE 'global_loot'|empty|
 
 # Upgrade conditions:
 # 	This won't be needed after this system is implemented, but it is used database that are not

utils/sql/git/required/2018_02_10_GlobalLoot.sql

@@ -0,0 +1,19 @@
+ALTER TABLE `npc_types` ADD `skip_global_loot` TINYINT DEFAULT '0';
+ALTER TABLE `npc_types` ADD `rare_spawn` TINYINT DEFAULT '0';
+
+CREATE TABLE global_loot (
+	id INT NOT NULL AUTO_INCREMENT,
+	description varchar(255),
+	loottable_id INT NOT NULL,
+	enabled TINYINT NOT NULL DEFAULT 1,
+	min_level INT NOT NULL DEFAULT 0,
+	max_level INT NOT NULL DEFAULT 0,
+	rare TINYINT NULL,
+	raid TINYINT NULL,
+	race MEDIUMTEXT NULL,
+	class MEDIUMTEXT NULL,
+	bodytype MEDIUMTEXT NULL,
+	zone MEDIUMTEXT NULL,
+	PRIMARY KEY (id)
+);
+