Fixed chunkinfo and RAllocatorHelper crashes. Details: * Tidied leak docs * Updated dialog command to workaround text windowserver bug and implement DIALOG_IMPL as an enum option. Also tried to support dismissing the dialog with CTRL-C but ended up just printing a warning as the notifier API is broken * Fixed RAllocatorHelper::OpenChunkHeap() (and thus chunkinfo <address>) and took Adrian's latest changes. * Fixed chunkinfo OOM problem

EXPORTS
	??0RExtraBtrace@@QAE@XZ @ 1 NONAME ; RExtraBtrace::RExtraBtrace(void)
	?Handle@RExtraBtrace@@QBEHXZ @ 2 NONAME ; int RExtraBtrace::Handle(void) const
	?EnableProfiling@RExtraBtrace@@QAEHH@Z @ 3 NONAME ; int RExtraBtrace::EnableProfiling(int)
	?Connect@RExtraBtrace@@QAEHXZ @ 4 NONAME ; int RExtraBtrace::Connect(void)
	?Close@RExtraBtrace@@QAEXXZ @ 5 NONAME ; void RExtraBtrace::Close(void)