Improvements to robustness of CThreadPool.
Rationalised CThreadPool a bit, so that only the main thread is used for thread death notifications. This means that the death of parent threads no longer causes a panic when the child threads is shut down.
EXPORTS
_ZN17RLoggingAllocator7InstallEv @ 1 NONAME
_ZN17RLoggingAllocator9UninstallEv @ 2 NONAME
_ZN17RLoggingAllocator15StaticTraceFreeEP10RAllocatorPv @ 3 NONAME
_ZN17RLoggingAllocator16StaticTraceAllocEP10RAllocatorPvi @ 4 NONAME
_ZN17RLoggingAllocator7InstallEj @ 5 NONAME
_ZN17RLoggingAllocator3NewEjP10RAllocatorRPS_ @ 6 NONAME