[Java] Adding a 2nd property on NanoXML
Adding a 2nd equivalence-checking property on the NanoXML benchmark. I've moved the benchmark code as per our discussions in #860.
- the license for this benchmark is the same as the license used for other benchmarks already in the java-ranger-regression folder
- As already mentioned in the README, this benchmark was originally contributed by Wang et al. this new benchmark would be in the java-ranger-regression folder which is present in ReachSafety.set
- assert.prp is the property file used
- nanoxml_eqchk folder now contains nanoxml_prop1.yml and nanoxml_prop2.yml as the task definition files. The implementation is moved to the impl/ folder.