requested to merge dang-kien.pham/beamer-tpt-ng:fix_inkscape_argument_variations_in_makefile into master
The Inkscape command format for export changed in Inkscape 1 and was updated in 2ea63aae
Some users still use Inkscape 0.
I made the export rule compatible with the two possible versions, calling the right command depending on the version of Inkscape.
@tarik : can you test with Inkscape 1, I only have Inkscape 0.