Merge branch 'js/mingw-symlink-net-share-leak'

Merge branch 'js/mingw-symlink-net-share-leak'

Git for Windows has been updated to avoid auto-detecting the symlink
type if the target path starts with a slash, preventing NTLM
credential leaks when checking out repositories with crafted
symbolic links pointing to network shares.

* js/mingw-symlink-net-share-leak:
  mingw: skip symlink type auto-detection for network share targets