Make Xcode less stupid and use the right files for b2RopeJoint and b2WheelJoint.

This is the first time this branch has successfully compiled since it started. Holy shit.

--HG--
branch : box2d-update

platform/macosx/love.xcodeproj/project.pbxproj

@@ -551,10 +551,10 @@
 		A968F0D81083A9FC00A895AA /* Mouse.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Mouse.cpp; sourceTree = "<group>"; };
 		A968F0DB1083AA6600A895AA /* Shape.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Shape.cpp; sourceTree = "<group>"; };
 		A968F0DC1083AA6600A895AA /* Joint.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Joint.cpp; sourceTree = "<group>"; };
-		A96F415C14127E310067FE9A /* b2RopeJoint.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = b2RopeJoint.cpp; path = ../../../../../../../../Downloads/Box2D_v2.2.0/Box2D/Box2D/Dynamics/Joints/b2RopeJoint.cpp; sourceTree = "<group>"; };
-		A96F415D14127E320067FE9A /* b2RopeJoint.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = b2RopeJoint.h; path = ../../../../../../../../Downloads/Box2D_v2.2.0/Box2D/Box2D/Dynamics/Joints/b2RopeJoint.h; sourceTree = "<group>"; };
-		A96F415E14127E320067FE9A /* b2WheelJoint.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = b2WheelJoint.cpp; path = ../../../../../../../../Downloads/Box2D_v2.2.0/Box2D/Box2D/Dynamics/Joints/b2WheelJoint.cpp; sourceTree = "<group>"; };
-		A96F415F14127E320067FE9A /* b2WheelJoint.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = b2WheelJoint.h; path = ../../../../../../../../Downloads/Box2D_v2.2.0/Box2D/Box2D/Dynamics/Joints/b2WheelJoint.h; sourceTree = "<group>"; };
+		A96F415C14127E310067FE9A /* b2RopeJoint.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = b2RopeJoint.cpp; sourceTree = "<group>"; };
+		A96F415D14127E320067FE9A /* b2RopeJoint.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = b2RopeJoint.h; sourceTree = "<group>"; };
+		A96F415E14127E320067FE9A /* b2WheelJoint.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = b2WheelJoint.cpp; sourceTree = "<group>"; };
+		A96F415F14127E320067FE9A /* b2WheelJoint.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = b2WheelJoint.h; sourceTree = "<group>"; };
 		A96F416314127E720067FE9A /* b2Rope.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = b2Rope.cpp; sourceTree = "<group>"; };
 		A96F416414127E720067FE9A /* b2Rope.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = b2Rope.h; sourceTree = "<group>"; };
 		A96F416614127E9C0067FE9A /* b2Draw.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = b2Draw.cpp; path = ../../../../../../../Downloads/Box2D_v2.2.0/Box2D/Box2D/Common/b2Draw.cpp; sourceTree = "<group>"; };