add llvm-2.9 for lucid.
add clang-2.9 for lucid.
add llvm-3.0 for lucid.
add clang-3.0 for lucid.
add llvm-3.1 for lucid.
add clang-3.1 for lucid.
add llvm-3.2 for lucid.
add clang-3.2 for lucid.
add setup for lucid.