proto web site set up

FYI, I gathered various tidbits about the new front-end and put them up here: http://clang.llvm.org/ This is obviously just a placeholder page until I get time to do more.

If you'd like to hack on it, the content is in the clang/www and clang/docs directory (docs maps to http://clang.llvm.org/ and http://clang.llvm.org/docs/ ). This is currently synched to the web site once a day, but I'm going to work on getting that to once and hour or (better yet) instantly available.

-Chris