SPRINGFIELD — Faced with mounting costs and a prison population that has swollen from 6,000 in the 1970s to nearly 50,000 today, the state prison department will oppose any enhancements to criminal penalties that lawmakers attempt to pass this year. Department of Corrections lobbyist Michael Lane told members of a House criminal law committee Tuesday that the agency will wait for a new task force created by Gov. Bruce Rauner to research and recommend a package of reforms before getting behind any single proposal …