* Retarget Visual studio tool chain to v142
* add ARM64 option to wintest.bat
* add windows/arm64 target to appveyor for CI
* add arm64 targets to visual studio solutions
* add cross compile option to wintest.bat
* Fix missing SET in wintest.bat
* update auto-generation scripts for msvc and update project files
This reverts commit 87c408b42d.
CL.exe doesn't seem to be in the path any more when using the
AppVeyor Visual Studio 2017 environment.
msbuild "C:\projects\libsodium\libsodium.vcxproj" /m /verbosity:minimal /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
Microsoft (R) Build Engine version 15.1.548.43366
Copyright (C) Microsoft Corporation. All rights reserved.
TRACKER : error TRK0005: Failed to locate: "CL.exe". The system cannot find the file specified. [C:\projects\libsodium\libsodium.vcxproj]
