[XeTeX] xdvipdfmx doesn't seem to respect PDF crop areas

[Akira Kakuto]

> and creating .bb file for each pdf by
> ebb -c foo.pdf
> before compiling by xelatex.

The option -c requires ebb "Version 0.5.2 (+ArtBox)",
that is, ebb applied a patch by dvipdfmx team.

Best,
Akira