It’s hard to find anyone who thought poorly of the New York Giants ’ latest draft haul to give Big Blue anything lower than a grade of B+, but if there is one pick that seems to be generating a lot of buzz given where he was selected, it’s the team’s third of three sixth-round picks, BYU linebacker Jack Kelly.   Typically, by the time a team gets to the sixth round of the draft, those players selected become something of a crap shoot.   But with Kelly, who is the fifth player from BYU to be drafted by the Giants, they just seem to have picked up a player who has a certain throwback era aura to him, a grittiness to his game that, upon first glance, makes one wonder how well he might have fit in with the old school linebackers of yesteryear who wore the Giants' helmet.   While Kelly, on paper at least, just seems like another in a long line of inside linebackers the team added for special teams, there are a few reasons why, with all apologies to the Giants’ other picks, he is our…