Jason Garrett constantly talks about finding the right kind of people. Talent is just part of the equation. He seeks players who possess a blend of ability, temperament and passion that goes beyond what can be measured by the 40 or in the weight room. Garrett believes it takes three years to get “your roster right in terms of who you are playing, the guys who are the building blocks of the future.’’ As he prepares to preside over his fourth draft as head coach, how many building blocks has he put in place for the Cowboys? The club has drafted 22 players during Garrett’s tenure as head coach. Nearly three-fourths of those picks remain on the roster. Six are starters, and several more will compete for starting jobs this season. Left tackle Tyron Smith and running back DeMarco Murray have been to the Pro Bowl.