* bsd: Fix eventfd broken logic
This commit fix eventfd logic being broken.
The following changes were made:
- EventFd IPC definition had argument inverted
- EventFd events weren't fired correctly
- Poll logic was wrong and unfinished for eventfd
- Reintroduce workaround from #3385 but in a safer way, and spawn 4
threads.
* ipc: Rework a bit for multithreads
* Clean up debug logs
* Make server thread yield when managed lock isn't availaible
* Fix replyTargetHandle not being added in the proper locking scope
* Simplify some scopes
* Address gdkchan's comments
* Revert IPC workaround for now
* Reintroduce the EventFileDescriptor workaround