Add parameter "-i dvipdfmx-unsafe.cfg" for call to dvipdfmx.
Used only in test environment.
This is needed because of regression for ja LilyPond found by Scott.
Coment by Jürgen:
"dvipdfmx-unsafe.cfg makes dvipdfmx call gs (rungs) with -dNOSAFER
rather than with -DSAFER (as in the default dvipdfmx.cfg of TL21).
However, this change should definitely only be applied to trustworthy
files, so changing the converter generally is certainly not such a good
idea."
5158b54eb9