Build fails on Japanese Windows

[sakurai-youhei]

Unless encoding="UTF-8" is specified at following locations, build fails due to below error.
https://github.com/jbmohler/matplotlib-winbuild/blob/master/utils.py#L34
https://github.com/jbmohler/matplotlib-winbuild/blob/master/utils.py#L37

Traceback (most recent call last):
  File "matplotlib-winbuild\buildall.py", line 58, in <module>
    main(options)
  File "matplotlib-winbuild\buildall.py", line 13, in main
    utils.build_freetype()
  File "C:\Users\homeuser\matplotlib-winbuild\utils.py", line 219, in build_freetype
    fixproj(os.path.join(ft_dir, 'builds', 'win32', vc, 'freetype.sln'), WinXX)
  File "C:\Users\homeuser\matplotlib-winbuild\utils.py", line 35, in fixproj
    content = '\n'.join(line.strip() for line in fd if line.strip())
  File "C:\Users\homeuser\matplotlib-winbuild\utils.py", line 35, in <genexpr>
    content = '\n'.join(line.strip() for line in fd if line.strip())
UnicodeDecodeError: 'cp932' codec can't decode byte 0xef in position 0: illegal multibyte sequence

[pbandj082]

in line 34 and line 37, you should add encoding='utf-8' at open function argument
open関数の文字コードをutf-8にしたら直りました、