SPRINGFIELD — Illinois courts are taking steps toward better understanding mental illness and its growing impact on the judicial system, which state Supreme Court Chief Justice Anne M. Burke said Tuesday too often lacks compassion, treats mental disorders as a crime and skirts alternatives to jail.Burke told reporters that her “call to action” came in response to a report her committee issued last year after months of study. It’s part of a national effort to review courts’ interactions with defendants or litigants who deal …