Misc fixes before v1.8.0 release (#239)

* Update timemory submodule for OMPT

- Updated OMPT support for OpenMP 5.2

* omnitrace exe cleanup

- fixed "omnitrace --" segfault
- added nullptr checks

* CMake updates

- moved omnitrace-interface-library definition up a directory
- general cleanup
- fixed branch/tag/ref for git submodule checkouts

* Improve shutdown of causal profiling after duration limit

* Fix dyninst minimum version number

* Removed debug print from binary::get_link_map

* Remove use of thread-pool in causal

* Relax causal testing when variance is high

* causal_gotcha utilities for blocking signals

* Tweak to causal example

* Install validate-causal-json as omnitrace-causal-print

* simplify address_multirange

* improve causal line saving

source/bin/omnitrace/internal_libs.cpp

@@ -265,9 +265,9 @@ get_library_search_paths_impl()
     }
 
     // search hard-coded system paths
-    for(const char* itr : { "/usr/local/lib", "/usr/share/lib", "/usr/lib", "/usr/lib64",
-                            "/usr/lib/x86_64-linux-gnu", "/lib", "/lib64",
-                            "/lib/x86_64-linux-gnu", "/usr/lib/i386-linux-gnu" })
+    for(const char* itr :
+        { "/usr/local/lib", "/usr/share/lib", "/usr/lib", "/usr/lib64",
+          "/usr/lib/x86_64-linux-gnu", "/lib", "/lib64", "/lib/x86_64-linux-gnu" })
     {
         _emplace_if_exists(itr);
     }