Improved analysis of functions to instrument + MPI support + timemory support (#2)

* various tweaks
* build updates + cleanup + overlap guard + min addr range
* Library source reorg + miscellaneous tweaks
* Removed unnecessary fwd decls
* Print address range in --print-X pair mode

- hosttrace modifications
  - disable instrumenting functions with overlapping sections or multiple entry points by default (control via --allow-overlapping option)
  - disable instrumenting functions whose address range < 512 bytes unless a loop is present by default (control via --min-address-range option)
  - disable instrumenting functions w/ loops whose address range < 64 bytes (control via --min-loop-address-range)
- Support for wrapping MPI function calls even in binary rewrite mode
  - e.g. use gotcha to wrap MPI functions with hosttrace_push_trace and hosttrace_pop_trace
- New timemory only mode --> HOSTTRACE_USE_TIMEMORY=ON
- New timemory + perfetto mode --> HOSTTRACE_USE_PERFETTO=ON + HOSTTRACE_USE_TIMEMORY=ON
- Full support for all timemory components
- parallel-overhead example for measuring the overhead in a MT-parallelized application with very small instrumentation functions
- improvements to output directories for hosttrace exe
- improvements to output directories for hosttrace library
- new hosttrace options
  - --print-instrumented <type> prints out the instrumented entities and exits
  - --print-available <type> prints out the available instrumentation entities and exits
  - --print-overlapping <type> prints out the overlapping entities and exits
  - NOTE: <type> above refers to the information printed out, e.g. module name vs. function name vs. module and function name, etc.

examples/transpose/transpose.cpp

@@ -155,11 +155,15 @@ run(int argc, char** argv)
 int
 main(int argc, char** argv)
 {
+    int rank = 0;
 #if defined(USE_MPI)
     MPI_Init(&argc, &argv);
+    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
 #endif
-    run(argc, argv);
+    if(rank == 0)
+        run(argc, argv);
 #if defined(USE_MPI)
+    MPI_Barrier(MPI_COMM_WORLD);
     MPI_Finalize();
 #endif
     return 0;