Add CompilerInstance, and starting moving clang-cc to it.
 - The design philosophy is in the CompilerInstance doxyment, if you don't agree
   with it now would be a good time to speak up.

llvm-svn: 87078
4 files changed
tree: 47cb99c61f80d5c4e0de8356051ba057b2cfc9dc
  1. clang/
  2. compiler-rt/
  3. llvm/