Merge branch 'master' into integrated-testing

.gitignore

src/main/scala/leon/AbstractZ3Solver.scala

src/main/scala/leon/Analysis.scala

src/main/scala/leon/Extensions.scala

src/main/scala/leon/LeonContext.scala

src/main/scala/leon/LeonOption.scala

src/main/scala/leon/Main.scala

src/main/scala/leon/plugin/CodeExtraction.scala

src/main/scala/leon/plugin/Extractors.scala

src/main/scala/leon/purescala/Extractors.scala

src/main/scala/leon/purescala/ScalaPrinter.scala

src/main/scala/leon/purescala/TreeOps.scala

src/main/scala/leon/purescala/Trees.scala

src/main/scala/leon/solvers/ParallelSolver.scala

src/main/scala/leon/solvers/RandomSolver.scala

src/main/scala/leon/solvers/TimeoutSolver.scala

src/main/scala/leon/solvers/TrivialSolver.scala

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

src/main/scala/leon/solvers/z3/FairZ3Solver.scala

src/main/scala/leon/solvers/z3/UninterpretedZ3Solver.scala