Sooey! Here Pig Pig Pig!   No one minds that healthy call at the hog farm when it’s time to feed the sows.   But taxpayers do take issue with it when it’s the call of the state legislature gathering a different kind of swine around public tax dollars.   Pennsylvania’s 180 charter schools gobbled up $1.8 billion last year from the Commonwealth’s public schools.   And Gov. Tom Wolf is refusing to let them continue to gorge on…