Merge symbolic resource bound inference for leon (PR153)

library/annotation/package.scala

library/instrumentation/package.scala

library/invariant/package.scala

library/lang/synthesis/package.scala

library/par/package.scala

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

src/main/scala/leon/Main.scala

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/evaluators/CodeGenEvaluator.scala

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

src/main/scala/leon/frontends/scalac/CodeExtraction.scala

...a/leon/invariant/engine/CompositionalTemplateSolver.scala

src/main/scala/leon/invariant/engine/ConstraintTracker.scala

...in/scala/leon/invariant/engine/InferInvariantsPhase.scala

src/main/scala/leon/invariant/engine/InferenceContext.scala

src/main/scala/leon/invariant/engine/InferenceEngine.scala

src/main/scala/leon/invariant/engine/InferenceReport.scala

src/main/scala/leon/invariant/engine/RefinementEngine.scala