Ahead of Tuesday’s game against the Arizona Diamondbacks, the Giants did something a little different. Players and coaches hold meetings before almost every matchup — one between pitchers and pitching coaches, and another with hitters and the rest of the staff. Manager Tony Vitello typically is involved in the latter meeting.But on this day, Vitello brought the Giants’ pitchers into his office to discuss some things, as the team looks to break out of its enduring slump this season. The first-year manager detailed the reasons behind the meeting in his pregame press conference.“A lot of the pitchers’ meetings are segmented into relievers or the starter game plan. Anytime they’ve gotten together, I’m never in there,” Vitello explained to reporters. “So, just some things that have come up over the last week. I don’t know that one is more predominant than another that has been shared with the position guys; those things started to tally up. So I just thought it was a good opportunity to kind of have those guys in there in an informal setting. “And again, with me, it was supposed to be like five or seven minutes, just...