MethodBind: Make sure header order is kept

When clang-format sorts includes alphabetically, MethodBind breaks.
Trying to move the object.h include upward in method_bind.h does
not seem to fix the problem, this needs investigation.

core/method_bind.cpp

@@ -26,7 +26,10 @@
 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
+// object.h needs to be the first include *before* method_bind.h
+// FIXME: Find out why and fix potential cyclical dependencies.
 #include "object.h"
+
 #include "method_bind.h"