Should lang/clang use lang/libLLVM?

[Benny Siegert <bsiegert%gmail.com@localhost>]

Hi!

I noticed that there is a large amount of files that are duplicated
between the clang and libLLVM packages, albeit with slightly different
paths (e.g. include vs. include/libLLVM).

Is there a reason for this duplication? I would love to see clang
depend on libLLVM, so that you can have both and not rebuild the world
twice.

Thoughts?

--Benny.