message: Clean Appveyor cache for
diff: -# Copyright (c) 2019, Intel Corporation
  +# Copyright (c) 2019-2020, Intel Corporation
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  @@ -42,3 +42,4 @@ by updates of docker files.
  01/30/2020: Added dockers for LLVM 10.0. Switched latest to LLVM 9.0
  03/18/2020: Updated LLVM 10.0 docker
  04/02/2020: Updated Windows dockers with LLVM built for x64
  +04/29/2020: Updated LLVM 9.0/10.0 with backport fix from trunk for #1767.
  