x11-fonts/gentium: Rename x11-fonts/gentium-plus, update to 7.00
Gentium-7.000 is a major update of the Gentium font family. Gentium
Plus has been renamed to Gentium, and Gentium Book Plus has been
renamed to Gentium Book, and is now supplied as a separate font
package.
See https://software.sil.org/gentium/history/ and
https://software.sil.org/gentium/download/
Changes: https://software.sil.org/gentium/v7changes/
Reported by: repology