Support sampling duration, sampling TIDs (#142)

- Sampling duration config values
  - OMNITRACE_SAMPLING_DURATION
  - OMNITRACE_PROCESS_SAMPLING_DURATION
  - Disables sampling after this time (in seconds) has elapsed 
- Sampling thread-id config values
  - OMNITRACE_SAMPLING_TIDS
  - OMNITRACE_SAMPLING_CPUTIME_TIDS
  - OMNITRACE_SAMPLING_REALTIME_TIDS
  - Allows user to select certain threads for sampling
- Miscellaneous
  - Tweaked the finalization verbosity messages
  - moved sampling-on-child-threads into runtime.hpp and runtime.cpp
  - fixed submodule dyninst header install

source/lib/omnitrace/library/components/pthread_mutex_gotcha.cpp

@@ -22,7 +22,6 @@
 
 #include "library/components/pthread_mutex_gotcha.hpp"
 #include "library/components/category_region.hpp"
-#include "library/components/pthread_gotcha.hpp"
 #include "library/config.hpp"
 #include "library/critical_trace.hpp"
 #include "library/debug.hpp"
@@ -293,7 +292,7 @@ pthread_mutex_gotcha::is_disabled()
 {
     return (get_state() != ::omnitrace::State::Active ||
             get_thread_state() != ThreadState::Enabled ||
-            (get_use_sampling() && !pthread_gotcha::sampling_enabled_on_child_threads()));
+            (get_use_sampling() && !sampling_enabled_on_child_threads()));
 }
 }  // namespace component
 }  // namespace omnitrace