(MConverterStatus): Change the member buf to union. (mconv_buffer_converter): Add const to the arg buf. (mconv_decode_buffer, mconv_rebind_buffer): Likewise. (mconv_decode): Adjusted for the change of MConverterStatus. (mconv_encode_range): Likewise.
(MConverterStatus): Change the member buf to union.
(mconv_buffer_converter): Add const to the arg buf.
(mconv_decode_buffer, mconv_rebind_buffer): Likewise.
(mconv_decode): Adjusted for the change of MConverterStatus.
(mconv_encode_range): Likewise.

xmirror/m17n-lib,xmirror/m17n-lib,xmirror/m17n-lib,xmirror/m17n-lib