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_gotcha.cpp

@@ -69,14 +69,6 @@ namespace
 using bundle_t = tim::lightweight_tuple<component::pthread_create_gotcha_t,
                                         component::pthread_mutex_gotcha_t>;
 
-auto&
-get_sampling_on_child_threads_history(int64_t _idx = utility::get_thread_index())
-{
-    static auto _v = utility::get_filled_array<OMNITRACE_MAX_THREADS>(
-        []() { return utility::get_reserved_vector<bool>(32); });
-    return _v.at(_idx);
-}
-
 auto&
 get_bundle()
 {
@@ -112,51 +104,6 @@ pthread_gotcha::shutdown()
     }
 }
 
-bool
-pthread_gotcha::sampling_enabled_on_child_threads()
-{
-    return sampling_on_child_threads();
-}
-
-bool
-pthread_gotcha::push_enable_sampling_on_child_threads(bool _v)
-{
-    bool _last                  = sampling_on_child_threads();
-    sampling_on_child_threads() = _v;
-    auto& _hist                 = get_sampling_on_child_threads_history();
-    _hist.emplace_back(_last);
-    return _last;
-}
-
-bool
-pthread_gotcha::pop_enable_sampling_on_child_threads()
-{
-    auto& _hist = get_sampling_on_child_threads_history();
-    if(!_hist.empty())
-    {
-        bool _restored = _hist.back();
-        _hist.pop_back();
-        sampling_on_child_threads() = _restored;
-    }
-    return sampling_on_child_threads();
-}
-
-void
-pthread_gotcha::set_sampling_on_all_future_threads(bool _v)
-{
-    for(size_t i = 0; i < max_supported_threads; ++i)
-        get_sampling_on_child_threads_history(i).emplace_back(_v);
-}
-
-bool&
-pthread_gotcha::sampling_on_child_threads()
-{
-    static thread_local bool _v = get_sampling_on_child_threads_history().empty()
-                                      ? false
-                                      : get_sampling_on_child_threads_history().back();
-    return _v;
-}
-
 void
 pthread_gotcha::start()
 {