Melissa McCarthy pushed “Spy” to a $30 million debut in an otherwise humdrum weekend at the box office. That was on the lower end of projections for the Fox espionage satire, which outfits globe-trotting intrigue with cat sweaters, but it was enough to dislodge last week’s champ, “San Andreas,” from its first place perch. The Warner Bros. disaster movie secured a second-place berth with $26.4 million, and has rumbled its way to a domestic total of $99 million in two weeks of release.
