issue #2771: fix compile errors

cocos/2d/ccConfig.h

@@ -268,11 +268,6 @@ To enable set it to a value different than 0. Disabled by default.
 
 #ifdef CC_USE_PHYSICS
 #define PHYSICS_CONTACT_POINT_MAX 4
-namespace cocos2d
-{
-    class Point;
-    typedef Point Vect;
-}
 #endif
 
 #endif // __CCCONFIG_H__

cocos/physics/CCPhysicsBody.h

@@ -40,9 +40,10 @@ NS_CC_BEGIN
 class Sprite;
 class PhysicsWorld;
 class PhysicsJoint;
-
 class PhysicsBodyInfo;
 
+typedef Point Vect;
+
 
 const PhysicsMaterial PHYSICSBODY_MATERIAL_DEFAULT(0.1f, 0.5f, 0.5f);
 

cocos/physics/CCPhysicsContact.h

@@ -40,6 +40,7 @@ class PhysicsWorld;
 
 class PhysicsContactInfo;
 
+typedef Point Vect;
 
 typedef struct PhysicsContactData
 {

cocos/physics/CCPhysicsWorld.h

@@ -42,6 +42,8 @@ class PhysicsShape;
 class PhysicsContact;
 class Array;
 
+typedef Point Vect;
+
 class Sprite;
 class Scene;
 class DrawNode;

cocos/physics/chipmunk/CCPhysicsWorldInfo_chipmunk.h

@@ -32,7 +32,7 @@
 #include "CCPlatformMacros.h"
 #include "CCGeometry.h"
 NS_CC_BEGIN
-class Vect;
+typedef Point Vect;
 class PhysicsBodyInfo;
 class PhysicsJointInfo;
 class PhysicsShapeInfo;