Debug sections become implicit

src/main/scala/leon/Main.scala

src/main/scala/leon/Reporter.scala

src/main/scala/leon/solvers/Solver.scala

src/main/scala/leon/solvers/SolverFactory.scala

src/main/scala/leon/solvers/z3/AbstractZ3Solver.scala

src/main/scala/leon/solvers/z3/FairZ3SolverFactory.scala

src/main/scala/leon/verification/AnalysisPhase.scala