Support inverted UTF8 output
Support inverted UTF8 output

Add support for UTF8i and ANSIUTF8i formats that provide reverse
mappings of UTF8 and ANSIUTF8 formats respective. This is useful for
black-on-white media.

UniQP/libqrencode,fukuchi/libqrencode,sballe73/libqrencode,UniQP/libqrencode,UniQP/libqrencode,sballe73/libqrencode,fukuchi/libqrencode,fukuchi/libqrencode,sballe73/libqrencode,UniQP/libqrencode,sballe73/libqrencode