[build2] MSVC C4819 & C2220 error occurred under non-English locales of WIN10.

[Boris Kolpackov]

good770326 via users <users at build2.org> writes:

> This happened when build2 was installing initially. Actually c4819 is
> just a warning about the file is not in unicode, but because of c2220,
> it's seen as an error and interrupt the installation.

I believe this is fixed in the just-released build2 0.14.0. Can you
give it a try?