some refactoring

jastadd-mquat-base/src/main/jastadd/solvers/Helpers.jadd

jastadd-mquat-base/src/main/jastadd/solvers/SolverUtils.jadd

...quat-solver-aco/src/main/java/ir/ac/ui/eng/ACOSolver.java

jastadd-mquat-solver-aco/src/main/java/ir/ac/ui/eng/Ant.java

...d-mquat-solver-emfer/src/main/java/uniks/EMFeRSolver.java

...d-mquat-solver-emfer/src/main/java/uniks/EMFeRTrafos.java

...e/tudresden/inf/st/mquat/solving/simple/SimpleSolver.java

...n/java/de/tudresden/inf/st/mquat/solving/SolverUtils.java

.../tudresden/inf/st/mquat/solving/HandwrittenTestSuite.java