graphics/tesseract: Update to 4.0.0

Changelog:
https://github.com/tesseract-ocr/tesseract/wiki/ReleaseNotes#tesseract-release-notes-oct-29-2018---v400

• due to an issue with the build system the man pages are missing -- this will be corrected at a later stage.
• bump revisions of dependencies due to shlib-version change.

PR: 234285
Submitted by: Piotr Kubaj <pkubaj@anongoth.pl> (maintainer)