By RICARDO CASTILLO     For a “misunderstanding,” the initiation of the construction of the Dos Bocas port refinery was surely a noisy one. But then, it only helps to deepen the polarization of Mexican President Andrés Manuel López Obrador (AMLO) and his multiple detractors, mainly international rating companies concerned about the state-run oil company Petróleos Mexicanos’ (Pemex) huge debt of $95.6