CMake buildbots

Folks,

Anyone moving Clang+LLVM make check buildbots to CMake?

Because compiler-rt only really works on ARM with CMake and because
llvm-tblgen doesn't respect autoconf build options, I'm probably going
to need CMake buildbots sooner that I'd like to.

If any one is doing this, please let me know and I'll help. If no one
is doing this, and you have information on what's expected, please let
me know, so I get it done correctly.

Otherwise, be prepared for some nasty Python code your way... :slight_smile:

cheers,
--renato