add tool function to recover misplaced tags of graphic attributes
add tool function to recover misplaced tags of graphic attributes

This tool function can be used to recover DXF tags placed in
wrong subclasses and therefore ezdxf doesn't process this tags
in then regular subclass parser.

mozman/ezdxf,mozman/ezdxf,mozman/ezdxf,mozman/ezdxf,mozman/ezdxf