[CSS4 Selectors] :matches naming bikeshed

I think we should rename :matches to :any.

1. :matches, doesn't make clear the "or" relationship that :any does. I
could easily interpret :matches to mean that it matches all of the selectors
instead of any one of them.
2. Two browser vendors already ship :any (vendor prefixed of course).
3. :any is less typing and fewer bytes to ship down the wire.

None of these things are a big deal of course, but all other things being
equal, it seems to me the spec should change. Just trying to resolve
https://bugs.webkit.org/show_bug.cgi?id=56990.

Ojan