win32: Generate the source with encoding utf-8 to fixes the python error
"C:\CI-Tools\msys64\mingw64\bin/python3.EXE" "../../src/vulkan/util/gen_enum_to_str.py" "--xml" "../../src/vulkan/registry/vk.xml" "--outdir" "C:/work/xemu/xemu-opengl/mesa/build/windows-mingw64/src/vulkan/util" Traceback (most recent call last): File "C:\work\xemu\xemu-opengl\mesa\src\vulkan\util\gen_enum_to_str.py", line 473, in main() File "C:\work\xemu\xemu-opengl\mesa\src\vulkan\util\gen_enum_to_str.py", line 462, in main f.write(template.render( UnicodeEncodeError: 'gbk' codec can't encode character '\xa9' in position 107: illegal multibyte sequence
Signed-off-by: Yonggang Luo luoyonggang@gmail.com