Refactoring of Verification Conditions/Reports

src/main/scala/leon/repair/Repairman.scala

src/main/scala/leon/solvers/smtlib/SMTLIBTarget.scala

src/main/scala/leon/synthesis/Synthesizer.scala

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

src/main/scala/leon/verification/DefaultTactic.scala

src/main/scala/leon/verification/InductionTactic.scala

src/main/scala/leon/verification/Tactic.scala

src/main/scala/leon/verification/VerificationCondition.scala

src/main/scala/leon/verification/VerificationReport.scala

src/main/scala/leon/xlang/XLangAnalysisPhase.scala

...n/test/verification/PureScalaVerificationRegression.scala