[dvipdfmx] dvipdfmx ignores "-m" option

[Akira Kakuto]

Dear Hilmar,

> dvipdfmx in texlive-binaries_2018.20180907.48586 works well with
> "-m option". However, dvipdfmx in texlive-binaries_2018.20181104.49075 and
> later ignores "-m option".

Thanks for the report. Confirmed.
The author will fix it this weekend.

Thanks,
Akira