decodeUTF8Line
Return
packed number of decoded characters to out buffer (highest 32 bits) and number of bytes required to decode the next character, or 0 if buffer has been decoded completely or -1 if end of line has been encountered
packed number of decoded characters to out buffer (highest 32 bits) and number of bytes required to decode the next character, or 0 if buffer has been decoded completely or -1 if end of line has been encountered