CVE-2019-9894, CVE-2019-9895, CVE-2019-9897, CVE-2019-9898

Fixes #10193

Update license, disable check

The number of requirements are too high, and also requires specific versions.
We can't maintain it.
The best thing to do is having pip install the needed dependencies.

Refresh patches, to suit new version.

texk/web2c/mplibdir/pngout.w:63:10: fatal error: mplib.h: No such file or directory

Needs unzip, to prevent:
processing /usr/share/unicode/Unihan.zip./usr/bin/unzip: unrecognized option: c

Add db & icu dependencies, as per evolution-data-server.

- Updated to version 20180414
- Added patch to get pdflatex compiled with poppler 0.71
- Deativated LuaTeX and XeTeX for now, as they won't compile with poppler 0.71
    - The new texlive release is about to come and should compile with newer
      poppler releases
    ==> LuaTeX and XeTeX can than be enabled again

Prepare for new texlive version by updating the list of files provided by
both packages to eliminate duplicates.