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/common/wrap_Data.h

@@ -29,10 +29,8 @@ namespace love
 {
 
 Data *luax_checkdata(lua_State *L, int idx);
-int w_Data_getString(lua_State *L);
-int w_Data_getPointer(lua_State *L);
-int w_Data_getSize(lua_State *L);
 int w_Data_open(lua_State *L);
+extern const luaL_Reg w_Data_functions[];
 
 } // love