Improve error baseline reporting

Conflicts:
	tests/baselines/reference/accessorWithInitializer.errors.txt
	tests/baselines/reference/accessorWithRestParam.errors.txt
	tests/baselines/reference/duplicateNumericIndexers.errors.txt
	tests/baselines/reference/errorSuperCalls.errors.txt
	tests/baselines/reference/functionTypeArgumentArrayAssignment.errors.txt
	tests/baselines/reference/incrementAndDecrement.errors.txt
	tests/baselines/reference/inheritedConstructorWithRestParams.errors.txt
	tests/baselines/reference/inheritedConstructorWithRestParams2.errors.txt
	tests/baselines/reference/optionalSetterParam.errors.txt
	tests/baselines/reference/overloadresolutionWithConstraintCheckingDeferred.errors.txt
	tests/baselines/reference/superCallsInConstructor.errors.txt
	tests/baselines/reference/superWithTypeArgument.errors.txt
	tests/baselines/reference/superWithTypeArgument2.errors.txt
	tests/baselines/reference/superWithTypeArgument3.errors.txt