Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.
llvm-svn: 16137
understand recursive descent parser, we can easily handle more syntax
variety, and we can more easily change the configuration items accepted.
llvm-svn: 15732