Imported some of the dynamiccore branch from love-experiments:

- Type names for love's Lua objects are specified as an argument to luax_register_type, rather than being statically defined in an array.

- luax_register_type takes a variable number of method array arguments, for registering superclass methods without copying them into the subclass' method array.

Also removed most of the header declarations for wrapper functions.

src/modules/physics/box2d/wrap_Physics.h

@@ -32,28 +32,6 @@ namespace physics
 namespace box2d
 {
 
-int w_newWorld(lua_State *L);
-int w_newBody(lua_State *L);
-int w_newFixture(lua_State *L);
-int w_newCircleShape(lua_State *L);
-int w_newRectangleShape(lua_State *L);
-int w_newPolygonShape(lua_State *L);
-int w_newEdgeShape(lua_State *L);
-int w_newChainShape(lua_State *L);
-int w_newDistanceJoint(lua_State *L);
-int w_newMouseJoint(lua_State *L);
-int w_newRevoluteJoint(lua_State *L);
-int w_newPrismaticJoint(lua_State *L);
-int w_newPulleyJoint(lua_State *L);
-int w_newGearJoint(lua_State *L);
-int w_newFrictionJoint(lua_State *L);
-int w_newWeldJoint(lua_State *L);
-int w_newWheelJoint(lua_State *L);
-int w_newRopeJoint(lua_State *L);
-int w_newMotorJoint(lua_State *L);
-int w_getDistance(lua_State *L);
-int w_setMeter(lua_State *L);
-int w_getMeter(lua_State *L);
 extern "C" LOVE_EXPORT int luaopen_love_physics(lua_State *L);
 
 } // box2d