[tex-live] mvorigin option in (x)dvipdfmx

[Akira Kakuto]

> --mvorigin option becomes redundant and can be removed
> in TeX Live 2017.

I want to keep the option, since it will be still
convenient, for example in the case of plain TeX
such as

%
% test.tex
%
% tex test.tex
% dvipdfmx --mvorigin test.dvi
%
\input epsf.tex
\input epsf-dvipdfmx.tex %force llx = lly = 0 for -dEPSCrop in GS
\epsfxsize=10cm
\centerline{\epsffile{ordinary.eps}}

\centerline{\epsffile{mptest.1}}% GS is not used
\bye