testDeviceInitialisationHandler: convert globals used by different threads into atomics to avoid data races (tsan was complaining)

	firt test D9 b for ThreadedFanOut

	Write tests for initial value initial value specification D.8

- Also removed race conditions in the test.

Print test name.

- use DummyRegister::getRawAccessor for access to backend registers.
- read and write convenience methods for rawAccessor.

Introduced UpdateModule which provides a Process Variable connected to
ExceptionDummy register  "REG1"

- runtimeErrorHandling_testPushTypeReadNonBlocking

- Reworked header.

- Reworked header.

- Reworked Header.
- Revised variable name. version -> versionBeforeRuntimeError

- tests still failing
- modifications incomplete
- cleanup needed

testProcessVariableRecovery: waiting for device to be opened avoids race conditin with runtime error

fixture_with_poll_and_push_input exposes pollVariable, pushVariable as
refernce types for convenience.