Encoding in Octave 5.0

[Chris Zheng]

Dear maintainers,

I use Octave within Emacs under Windows 8.1 using Inferior Octave
mode. With version 4.4.1, the following code

title('é');
print n.svg

results in garbage content in the Figure window, but the right content
in the SVG file. However with version 5.0.90 downloaded from
ftp://alpha.gnu.org/gnu/octave/, the above code results in right
content on the screen but wrong content in the SVG file (the wrong
content is encoded in GBK which is my locale encoding). The code sends
to the Octave process is indeed encoded in UTF-8. I wonder what is
changed between 4.4.1 and 5.0, and what can I do to fix the problem.

Thank you for your work,

Chris