[Tests] fix symlinks in windows/appveyor

Author: ljharb

appveyor.yml

@@ -32,6 +32,9 @@ platform:
 
 # Install scripts. (runs after repo cloning)
 install:
+ # Fix symlinks in working copy (see https://github.com/appveyor/ci/issues/650#issuecomment-186592582) / https://github.com/charleskorn/batect/commit/d08986802ec43086902958c4ee7e57ff3e71dbef
+ - git config core.symlinks true
+ - git reset --hard
  # Get the latest stable version of Node.js or io.js
  - ps: Install-Product node $env:nodejs_version $env:platform
  - IF %nodejs_version% EQU 0.6 npm config set strict-ssl false && npm -g install [email protected]