Worked these changes into the client & server (read more)

The changes were fairly easy, and I was actually able to find and fix an
out-of-sequence bug: The destructors for the AccountManager and the
CharacterManager were using SQL code after the call to SQLite3_close_v2(),
so I added and called UnloadAll() for both of them.

common/map/region_pager_base.hpp

@@ -38,6 +38,7 @@ public:
 	//region manipulation
 	virtual Region* GetRegion(int x, int y);
 	virtual Region* FindRegion(int x, int y);
+	virtual Region* PushRegion(Region* const);
 
 	virtual Region* LoadRegion(int x, int y);
 	virtual Region* SaveRegion(int x, int y);