jaraco.windows provides the os.symlink and os.readlink functions.
	Monkey-patch the os module to include them if not present.

def patch_os_module():
	"""
	jaraco.windows provides the os.symlink and os.readlink functions.
	Monkey-patch the os module to include them if not present.
	"""
	if not hasattr(os, 'symlink'):
		os.symlink = symlink
		os.path.islink = islink
	if not hasattr(os, 'readlink'):
		os.readlink = readlink