OBJECT HANDLING IN MAJIK

To cut short,

	void move(object target)
	{
	    if (ENV(THOB))
	        ENV(THOB)->remove_oid(THOB);
	    move_object(target);
	    if (ENV(THOB))
	        target->assign_oid(THOB);
	}

Every object has an object id, OID. When object is moved into a new room,
the room assigns a new OID for it. The OID doesn't have any real use inside
the server (atleast I haven't figured out anything), it is only used as a 
'handle' for managing object structures in the client.

The algorithm for generating OID can be as simple as an incremental
counter. Problems will occur when the counter wraps around at 2^32, but that
requires some kiukku(tm) from players :). A more complicated solution would
be to scan all objects in the gridmap and then choose lowest unused OID. 

Thus, we need to update some commands in the client:

	CMD_ADD_OBJECT		Called when object enters the gridmap
		<oid> <object character> <object color>

	CMD_REMOVE_OBJECT	Called when object leaves the gridmap
		<oid>

	CMD_OBJECTINFO		Called to update object's properties
		<oid> <object character> <object color>

	CMD_OBJECT_MOVE		Called when object moves in the gridmap
		<oid> <new location>

Note that CMD_OBJECT becomes obsolete.