Since new headergen is now the default for building LLVM-libc, the docs need to be updated to reflect that. While I was editing those docs, I took a quick pass at updating other out-of-date pages.
Since new headergen is now the default for building LLVM-libc, the docs need to be updated to reflect that. While I was editing those docs, I took a quick pass at updating other out-of-date pages.