I've made docstring changes to point out that it's only useful to
set goto-address-uri-schemes-ignored and goto-address-uri-schemes
prior to loading the library.

I'm not sure if there's any policy about such things, but it seemed
like it would be quite a lot more work to get around that. I imagine
the :set ability of defcustom would make it possible to have changes
to those variables dynamically update goto-address-url-regexp as well;
but in doing that you'd need to take care not to clobber values which
had themselves been customized also, and it all seemed like a lot of
added complexity for little benefit.


-Phil