[gnome-shell] Non-fast-forward update to branch wip/smcv/gir-api-versions

[Simon McVittie <smcv src gnome org>]

The branch 'wip/smcv/gir-api-versions' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  c3b46b2... Specify API versions for all non-bundled GIR APIs, except G

Commits added to the branch:

  e84dfe9... Specify API versions for all public GIR APIs, except GLib