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

[Aiden Grossman via cfe-commits]

boomanaiden154 wrote:

```
cmake -S /home/gha/llvm-project/llvm -B /home/gha/llvm-project/build -D 'LLVM_ENABLE_PROJECTS=bolt;clang;clang-tools-extra;flang;libclc;lld;lldb;llvm;mlir;polly' -D 'LLVM_ENABLE_RUNTIMES=compiler-rt;flang-rt;libc;libcxx;libcxxabi;libunwind' -G Ninja -D CMAKE_PREFIX_PATH=/home/gha/.local -D CMAKE_BUILD_TYPE=Release -D CLANG_ENABLE_CIR=OFF -D LLVM_ENABLE_ASSERTIONS=ON -D LLVM_BUILD_EXAMPLES=ON -D COMPILER_RT_BUILD_LIBFUZZER=OFF -D 'LLVM_LIT_ARGS=-v --xunit-xml-output /home/gha/llvm-project/build/test-results.xml --use-unique-output-file-name --timeout=1200 --time-tests --succinct' -D LLVM_ENABLE_LLD=ON -D CMAKE_CXX_FLAGS=-gmlt -D CMAKE_C_COMPILER_LAUNCHER=sccache -D CMAKE_CXX_COMPILER_LAUNCHER=sccache -D CMAKE_DISABLE_PRECOMPILE_HEADERS=ON -D LIBCXX_CXX_ABI=libcxxabi -D MLIR_ENABLE_BINDINGS_PYTHON=ON -D LLDB_ENABLE_PYTHON=ON -D LLDB_ENFORCE_STRICT_TEST_REQUIREMENTS=ON -D CMAKE_INSTALL_PREFIX=/home/gha/llvm-project/build/install -D CMAKE_EXE_LINKER_FLAGS=-no-pie -D LLVM_ENABLE_WERROR=ON
```

is the raw one.

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