Byline: Vito Stellino, Times-Union sports writer
When the late John McKay, the former Tampa Bay Buccaneers coach, was once asked about his team's execution, he said, "I'm all in favor of it."
Tom Coughlin, the Jaguars coach, isn't much for telling jokes, but he's stressing execution this week as the team prepares for Thursday night's game against Buffalo.
That's because he thinks better execution is the key to solving the team's offensive woes this year.
For the past five years, the Jaguars ranked in the top 10 in the NFL in offensive yardage gained.
Yet they were ranked 22nd before yesterday's games in offensive yardage and 26th in …