dev-libs/glib: bump to 2.58.1
2.58 release series is disted by meson/ninja, but as we eautoreconf
for package splits anyways, that doesn't matter to us more than now
not having gtk-doc pregenerated. Add gtk-doc USE flag for keeping
gtk-doc possible. Meson conversion and all the related split
rewrites will be handled further in the future; in all likelyhood
not before autotools is dropped upstream, or at least not before 2.60.
Signed-off-by: Mart Raudsepp <leio@gentoo.org>
Package-Manager: Portage-2.3.52, Repoman-2.3.11