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

source/bin/omnitrace/omnitrace.cpp

@@ -212,7 +212,8 @@ main(int argc, char** argv)
                 stderr,
                 "These were the last %i log entries from omnitrace. You can control the "
                 "number of log entries via the '--log <N>' option or OMNITRACE_LOG_COUNT "
-                "env variable.\n");
+                "env variable.\n",
+                num_log_entries);
 
             if(log_ofs) log_ofs->close();
             log_ofs.reset();