  This paper is a rebuttal to Eur. Phys. Jour. Plus 130, 191 (2015), which
claims that the results in arXiv:1502.04911 (Ann. Phys. 355, 360 (2015)) are
incorrect. For this reason, some of the results in arXiv:1502.04911 have been
reviewed and clarified. The results in this paper are dedicated to the 100th
anniversary of Albert Einstein's presentation of the complete General Theory of
Relativity to the Prussian Academy.
