Draft: Pass buffers size along with the associated buffer

This is a follow up to libdvdread!22 and aims at preventing out of bounds read

This has been minimally tested. I'm not entirely sure that this change is required, or if it should be this invasive as it spans across 2 projects, not including the applications using libdvd*

mentioned in merge request libdvdread!22

added 2 commits

• be614af2 - configure.ac: Bump version
• 79246bb7 - dvdnav: Forward the buffers size

Compare with previous version

mentioned in merge request libdvdread!31

May also be merged once libdvdread!31 is merged.

mentioned in merge request !50