* All projects are available under NCSA license,
other than dragonegg.
* "Runtime" projects are dual-licensed under
both NCSA and MIT:
libc++, libc++abi, compiler-rt
* I don't mention MIT for compiler-rt as
we only build it as part of LLVM.
This corrects linkage failures arising from missing -lc++abi and
resolves "unused argument" warnings arising due to -stdlib=libc++
serving no purpose when search paths are being supplied explicitly.
