issue #4039: set tilemap <object> x and y value to original, and add “position_x”, “position_y”, “size_width” and “size_height” value.
issue #4039: change name “position_x”, “position_y”, “size_width”, “size_height” to "converted_x", "converted_y", "converted_width", "converted_height".
issue #4039: change name “position_x”, “position_y”, “size_width”, “size_height” to "converted_x", "converted_y", "converted_width", "converted_height".
issue #4039: delete name "converted_x", "converted_y", "converted_width", "converted_height".
Merge pull request #5382 from boyu0/iss4039_tilemap_objectgroup_fix

closed #4039: fix bug: tilemap <object> x, y, width and height value parse incorrect.