Bug#1042555: glib2.0: Release 2.77.x to unstable

[Jeremy Bícha]

Simon,

glib 2.77.1 appears to be the GNOME 45 Beta release. It has
successfully migrated out of mantic-proposed in Ubuntu. I am unaware
of any remaining blockers to landing it in Testing.

Would you be comfortable if we uploaded it to Unstable now? Last
cycle, the upstream maintainers were annoyed that distros didn't get
more user testing sooner. I think they were talking more about Ubuntu
and Fedora but maybe Debian can help there.

Thank you,
Jeremy Bícha