Describe the bug
In my Japanese environment (codepage 932), I get two C4819 warnings when I run bootstrap-vcpkg.bat
Actually, this is just a warning, not a bug.
However, I notice it every time I run bootstrap-vcpkg.bat, so I'd like to fix it to make it cleaner.

Environment

• OS: [Windows 10 Home 19041]
• Compiler: Visual Studio Community 2019 16.8.2

To Reproduce
Steps to reproduce the behavior:

1. bootstrap-vcpkg.bat
2. See warning

Expected behavior
No warning during bootstrap-vcpkg.bat

Failure logs

• bootstrap-vcpkg-on-japanese-win10.txt

Additional context
These C4819 warnings are caused by Unicode character in the following two files.
toolsrc\src\vcpkg\export.prefab.cpp
toolsrc\src\vcpkg\registries.cpp