Fix deadlocks during initialization (#167)

- More to come in later commit, below is just tidying some stuff up
  - clang-tidy
  - mpi_gotcha quiet about not finding funcs
  - update to new papi config
  - sampling block_samples / unblock_samples
    - disable calling component's sample functions within sampler
  - release doesn't strip library
  - remove HSA and ROCP env variables from modulefile / setup-env
- preliminary support for LD_PRELOAD usage
- default sampling rate is 300 interrupts / second
- fixes various deadlock issues at startup

examples/rccl/CMakeLists.txt

@@ -20,7 +20,7 @@ if(hip_FOUND AND rccl_FOUND)
 
     # After the following call, the CMake targets defined by googletest and Catch2 will be
     # available to the rest of the build
-    fetchcontent_makeavailable(rccl-tests)
+    fetchcontent_populate(rccl-tests)
 
     get_filename_component(rccl_ROOT_DIR "${rccl_INCLUDE_DIR}" DIRECTORY)