[clang] [libclc] [libclc] Rework libclc naming convention to use the triple (PR #177465)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

> It looks like it might be an interaction between adding a bunch of projects at the same time. I'm going to revert for now given not having postsubmit coverage of the premerge configuration is a reasonably big deal. The CMake command to reproduce should be in there. If you can't reproduce, feel free to ping me and I will try and help.

Sure, I'll look at it later

https://github.com/llvm/llvm-project/pull/177465