[build2] build2 g++ -std=c++1y problem

[Boris Kolpackov]

Feiyun Wang <feiyunw at yahoo.com> writes:

> error: unable to parse /showIncludes include error line 'C:\build2-build\build2-toolchain-0.7.0-a.0.20180522141759.4db23615b182\libpkgconf\libpkgconf/config.h(9): fatal error C1083: 无法打开包括文件: “libpkgconf/version.h”: No such file or directory'

I am pretty sure the problem is with the translated error message that we are
unable to parse. Thanks for the report, I will look into this tomorrow and
will get back to you.