Rename Unknown0x0164 to AttachedPlayerID

This is the Id of another player that this player is attached to. This means
that its movement is controlled by another.

Author: brainiac

include/eqlib/game/PlayerClient.h

@@ -446,7 +446,7 @@ class [[offsetcomments]] PlayerBase : public TListNode<PlayerClient>, public CAc
 /*0x170*/ PlayerClient*     Vehicle;                      // NULL until you collide with a vehicle (boat,airship etc)
 /*0x178*/ PlayerClient*     Mount;                        // NULL if no mount present
 /*0x180*/ PlayerClient*     Rider;                        // the mount's rider
-/*0x188*/ unsigned int      Unknown0x0164;
+/*0x188*/ unsigned int      AttachedPlayerID;
 /*0x18c*/ bool              Targetable;                   // true if mob is targetable
 /*0x18d*/ bool              bTargetCyclable;
 /*0x18e*/ bool              bClickThrough;