Kernel: Added real support for thread and event blocking

- SVC: Added ExitThread support
- SVC: Added SignalEvent support
- Thread: Added WAITTYPE_EVENT for waiting threads for event signals
- Thread: Added support for blocking on other threads to finish (e.g. Thread::Join)
- Thread: Added debug function for printing current threads ready for execution
- Thread: Removed hack/broken thread ready state code from Kernel::Reschedule
- Mutex: Moved WaitCurrentThread from SVC to Mutex::WaitSynchronization
- Event: Added support for blocking threads on event signalling

Kernel: Added missing algorithm #include for use of std::find on non-Windows platforms.

src/core/hle/kernel/mutex.cpp

@@ -46,6 +46,11 @@ public:
     Result WaitSynchronization(bool* wait) {
         // TODO(bunnei): ImplementMe
         *wait = locked;
+
+        if (locked) {
+            Kernel::WaitCurrentThread(WAITTYPE_MUTEX);
+        }
+
         return 0;
     }
 };