Upgrades spawners to have parameters/properties and optimized timers (#6)

Upgrades spawners to have:
- [X] Parameter support
- [X] Property support
- [X] Optimized timers
- [X] Support for Proximity Spawners
- [X] Probabilities

Scripts/Regions/Spawning/SpawnEntry.cs

@@ -46,6 +46,7 @@ namespace Server.Regions
 
 		public int ID{ get{ return m_ID; } }
 		public BaseRegion Region{ get{ return m_Region; } }
+		Region ISpawner.Region{ get{ return m_Region; } }
 		public Point3D HomeLocation{ get{ return m_Home; } }
 		public int HomeRange{ get{ return m_Range; } }
 		public Direction Direction{ get{ return m_Direction; } }