Evaluating foralls and lots of fixes

src/main/java/leon/codegen/runtime/FiniteLambda.java

src/main/java/leon/codegen/runtime/Lambda.java

...leon/codegen/runtime/LeonCodeGenRuntimeHenkinMonitor.java

src/main/java/leon/codegen/runtime/PartialLambda.java

src/main/scala/leon/codegen/CodeGeneration.scala

src/main/scala/leon/codegen/CompilationUnit.scala

src/main/scala/leon/codegen/CompiledExpression.scala

src/main/scala/leon/datagen/NaiveDataGen.scala

src/main/scala/leon/datagen/VanuatooDataGen.scala

src/main/scala/leon/evaluators/CodeGenEvaluator.scala

src/main/scala/leon/evaluators/DefaultEvaluator.scala

src/main/scala/leon/evaluators/DualEvaluator.scala

src/main/scala/leon/evaluators/Evaluator.scala

src/main/scala/leon/evaluators/RecursiveEvaluator.scala

src/main/scala/leon/evaluators/TracingEvaluator.scala

src/main/scala/leon/purescala/CheckForalls.scala

src/main/scala/leon/purescala/Constructors.scala

src/main/scala/leon/purescala/Definitions.scala

src/main/scala/leon/purescala/ExprOps.scala

src/main/scala/leon/purescala/Expressions.scala