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/omnitrace.cpp

@@ -324,7 +324,7 @@ main(int argc, char** argv)
                     std::regex_replace(argv[j], std::regex{ "(.*)([ \t\n\r]+)$" }, "$1");
                 copy_str(_cmdv[k], _v.c_str());
             }
-            mutname = _cmdv[0];
+            if(_cmdc > 0) mutname = _cmdv[0];
             break;
         }
         else