atomic.cpp: improvements.

Reduced static memory amount for waitable atomics.
Allow notifier to skip notifications if wait/notify masks don't overlap.
Improve raw_notify to wake up the thread by its id, add thread_id arg.
Add optional mask argument to notify_one() and notify_all().

Utilities/sync.h

@@ -7,6 +7,7 @@
 #include "dynamic_library.h"
 
 #ifdef _WIN32
+#define NOMINMAX
 #include <Windows.h>
 #include <time.h>
 #elif __linux__