The APU State and Event Timing Status sections use the same GUID

[rtzoeller]

Both the APU State and Event Timing Status sections use the same GUID (F1CEE36E-E483-4565-3A3E-AB06893FB67A, see GUID.APU State). This makes it difficult to operate on each type of section independently, since you cannot query for them based on the GUID without getting references to both.

Event Timing Status should get its own GUID, instead of hijacking APU State's.