FancyURLopener and URLopener have been removed from Python 3.14

[frenzymadness]

Hello.

FancyURLopener and URLopener have been removed from Python 3.14 (they have been deprecated since Python 3.3) and that means that this code will no longer work:

node/tools/configure.d/nodedownload.py

Lines 24 to 27 in 8aa0513

	class ConfigOpener(FancyURLopener):
	"""fancy opener used by retrievefile. Set a UA"""
	# append to existing version (UA)
	version = '%s node.js/configure' % URLopener.version

If you still need this functionality to set a custom user agent, I can propose a solution that will work with a newer Pythons.