Request for review: build infrastructure for Clang

[Roman Divacky]

On Tue, May 18, 2010 at 02:10:08PM -0700, Doug Barton wrote:
> On 5/18/2010 12:35 AM, Roman Divacky wrote:
> > two now (clang and tblgen) with one more coming soon (llvm-mc/as)
> 
> With just two binaries I'd suggest usr.bin/clang and usr.bin/tblgen.

the tblgen is used only for building clang/llvm stuff so I don't
think it deserves it's own directory. maybe we should not even
install in during installworld