Merge branch 'js/windows-tests' into next

Merge branch 'js/windows-tests' into next

* js/windows-tests:
  t5503: GIT_DEBUG_SEND_PACK is not supported on MinGW
  t7004: Use prerequisite tags to skip tests that need gpg
  Use prerequisites to skip tests that need unzip
  t3700: Skip a test with backslashes in pathspec
  Skip tests that require a filesystem that obeys POSIX permissions
  t0060: Fix tests on Windows
  Use prerequisite tags to skip tests that depend on symbolic links
  t9100, t9129: Use prerequisite tags for UTF-8 tests
  t5302: Use prerequisite tags to skip 64-bit offset tests
  Skip tests that fail if the executable bit is not handled by the filesystem
  t3600: Use test prerequisite tags
  test-lib: Infrastructure to test and check for prerequisites
  t0050: Check whether git init detected symbolic link support correctly
  Tests on Windows: $(pwd) must return Windows-style paths
  test-lib: Work around missing sum on Windows
  test-lib: Work around incompatible sort and find on Windows

Conflicts:
	t/t3000-ls-files-others.sh