Rename Diagnostic to DiagnosticsEngine as per issue 5397

llvm-svn: 140478
119 files changed
tree: 45eacdb31f6821030d5b367eabafdb015526a85f
  1. clang/
  2. compiler-rt/
  3. debuginfo-tests/
  4. libcxx/
  5. libcxxabi/
  6. lldb/
  7. llvm/
  8. polly/