By RICARDO CASTILLO Just when everyone in Mexico thought President Andrés Manuel López Obrador (AMLO) and tycoon entrepreneur Carlos Slim had frozen their relationship, last Friday, June 28, they reappeared together in the state of Oaxaca to relaunch the completion of the 150-kilometer-long, two-expanded-lane Milta-Tehuantepec super highway, with an 8-billion-peso investment. Was this event the beginning of the thawing of