This sub-patch release extends support in pre-compiled libraries down to glibc 2.12.

https://github.com/google/protobuf/issues/2783

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/29084

Simplify jQuery selector

See merge request !9881

Refactor/global permissions for internal users

See merge request !9598

Backport cache middleware fix

See merge request !9867

link issuable reference to itself in header

Closes #24137

See merge request !9641

Fix xml.updated field in rss/atom feeds

Closes #19437

See merge request !9889

Fix alignment of resolve discussion button

Closes #29189

See merge request !9865

Resolve transient failure in spec/models/user_spec.rb

Closes #29328

See merge request !9892

Fix inconsistent deploy key documentation in UI

See merge request !9817

Update templates with new CI variables

See merge request !9852

Execute inflections initializer earlier

See merge request !9871

Fix GitHub Import deleting branches for open PRs from a fork

Closes #29046

See merge request !9758

Add frequently used emojis back to awards menu

See merge request !9843

Fix notes polling failing after code changes

Closes #29327

See merge request !9862

which isn't properly cleaning up whenever something
is thrown, not raised. See:

https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1402#note_25128108

Consistent button colors for disabled buttons

Closes #29263 and #29221

See merge request !9848

adds queue option to push bulk in authorized projects worker

Closes #29137

See merge request !9813

Enable snippets for new projects by default

Closes #28192

See merge request !9857

Fix for creating a project through API when import_url is nil

Closes #29121

See merge request !9841

See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9235

Update feature visibility spec for projects edit page

See merge request !9787

Document gitaly.socket_path setting

See merge request !9858

Prevent more than one issue tracker to be active for the same project

Closes #22797

See merge request !9669

Resolve "Can't select a mirror user"

See merge request !9854

Change label for name on sign up form

Closes #29209

See merge request !9845

Add zip/unzip as dependencies for Pages source installations

Closes #28440

See merge request !9828

If there is an existing gitlab.yml file with snippets explicitly
disabled, they won't be enabled with this change.

Add a section on issue/MR labeling in CONTRIBUTING.md

Closes #25097

See merge request !9850

In EE, `@users` can be an array at the point where we remove the current
user, because it can do a permissions check on the users for project
mirroring.

Fix this in CE by only using array methods, not AR methods. We can't use
`delete` because that uses `Object#equal?`, which isn't true in this
case.