[All] Fixed multiple issues during build on Linux

- Added some fixes introduced by RodoMa92 in PR198

- Lack of AVX2 extension (should be done differently in the future)
- Disable deprecated-volatile warning
- Added missing override in posix EventInfo, ImGui notification class and XContent class
- Removed not used XAudio2.h include in XMP
- Fixed missing switch-case in XObject
- Added fugly template in native_list.h
- Fixed multiple smaller issues

src/xenia/gpu/trace_player.cc

@@ -89,7 +89,7 @@ void TracePlayer::PlayTrace(const uint8_t* trace_data, size_t trace_size,
                             TracePlaybackMode playback_mode,
                             bool clear_caches) {
   playing_trace_ = true;
-  graphics_system_->command_processor()->CallInThread([=]() {
+  graphics_system_->command_processor()->CallInThread([=, this]() {
     PlayTraceOnThread(trace_data, trace_size, playback_mode, clear_caches);
   });
 }