graphics/geeqie: make compatible with exiv2 0.28

Mostly https://github.com/BestImageViewer/geeqie/commit/86d5f780bae35d0fc2122646ff415633b5f15a60
without the #if mess.

Note there is a remaining NEF crasher reported against newer 2.1,
supposedly fixed by https://github.com/BestImageViewer/geeqie/commit/c45cca777aa3477eaf297db99f337e18d9683c61
which is not part of this commit.

PR: 272311