Update emulation based acceptance tests on the basis of the new deduplicated warning output

adds check_path flag to cwe_checker for finding paths from user input functions to CWE hits.

* Fixed some stuff mentioned in review; added flag --no-logging to surpress logging to STDOUT;

* Changes.md

* Removes old version of log_utils, prototypes for new version.

* Implemented native logging

* Json-Output basically working.

* Added acceptance test for JSON parsing

* Adds some odoc to log_utils.

* Added support for file output (--cwe-checker-out)

* Add acceptance test for file output