PDI-5298/PDI-11367 Samples need some fixing

* Deleted duplicate sample src from engine module (first commit can be ignored)
* Added ant target to create sample db from sql scripts on build time
* Fixed samples to run out of box using included sample H2 db (where connection to db is required) 
* Fixed line feed/carriage return issue (PDI-11454) to enable mixed mode working (TextFileInput)
* Included PDI-11252 fix to this pull request as dependency (samples mass update required).
* Fixed runAllSampleTransformations job to have ability to check fixes for backward compatibility with samples (could be added to jenkins smth like: 
   cd dist
   sh -C kitchen.sh -file="samples/jobs/run_all/Run all sample transformations.kjb" >> samples_run_log.txt)