[HEADS UP] libgit2 bump to 0.24.0

[Igor Gnatenko]

I'm updating libgit2 stack to 0.24.0 in rawhide.

There were some API breakage as usual, but I will take care about
rebuilding & patching all dependencies.

[ ] python-pygit2
[ ] libgit2-glib
- [ ] gitg
- [ ] gnome-builder
- [ ] gedit (gedit-plugin-git) ?
[ ] julia
[ ] kate (kate-plugins)
[ ] kf5-ktexteditor
[ ] rubygem-rugged
[ ] subsurface


Thanks.
-- 

-Igor Gnatenko