Switch all of the "isysroot" const char*'s throughout the AST reader
and writer to StringRef or std::string, as appropriate.

llvm-svn: 135769
9 files changed
tree: 3dd8378bda7ac58c68fc28eddc0ab63ed8c8184d
  1. clang/
  2. compiler-rt/
  3. debuginfo-tests/
  4. libcxx/
  5. libcxxabi/
  6. lldb/
  7. llvm/
  8. polly/