- fix conflits and split osd subpackage

- Fix (hopefully) overall compatibility with previous version
- add Obsoletes to solve conflict in Factory

- set tessdata dir location to be the same as in package tesseract-ocr
(/usr/share/tessdata, not /usr/share/tesseract/tessdata)
- fix version prefix and version format: 4.1.0+git.20191030.6572757
* git tag 6572757 is upstream 4.1.0 (not 4.0)
* set version format to include human readable date

- Update to version 4.0+git.1572421488.6572757:
* This release only supports LSTM neural net based engine (--oem 1)