READING, Pa. — Pennsylvania overhauled its child sexual abuse laws Tuesday more than a year after a grand jury report showed the cover-up of hundreds of cases of abuse in most of Pennsylvania’s Roman Catholic dioceses over the last seven decades. The central bill signed by Gov. Tom Wolf gives future victims of child sex abuse more time to file lawsuits and to end time limits for police to file criminal charges. The grand jury report spurred several states to change their laws and other states to begin similar investigations.