Tests and fixes
Tests and fixes

Tests advancement:

I tested WinSDK 7.1, WinSDK 7.0, WinSDK 6.1, VC for Python 2.7 with current arch as X86 and all possible target architecture. Environment generated from script is good for all (With some little fixes in this commit), some path are add on some case, I will look if I need to remove them. I need also to check .Net Framework 64bit in this case.

I need also to do test for sames compilers on X64 architecture, I will also test MSVC++ 2015 Build tools on X64.

I looked for create automated test on AppVeyor for this, but it is impossible to only have one of theses compilers only installed... So I did all test manually.
pypa/setuptools,pypa/setuptools,pypa/setuptools