build faild in Windows10

[fengshaoxie]

Describe your problem:

Already up to date.
[fetch & build]: boost
Building Boost.Build engine
系统找不到指定的路径。
'.\build.bat' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

Failed to build Boost.Build engine.
Please consult bootstrap.log for further diagnostics.

Error (bootstrap.bat): 1

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Steps to reproduce the problem:

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build_tools base repo version:
master
Operating system:
Windows10 64bit
Compiler version:
master

[igwyd]

Duplicate of #105