This reverts commit b5a493e9.

The Meson build landed and has been building in the GitLab CI for some
time, so we can remove force-autotools.

This is in preparation for opening a merge request with a Meson build
system.

Only one swrast provider can be built.

Drop unknown arguments.

Upstream build issue was fixed.

I pruned the ostree repo a bit too aggressively, which means the compose
step is breaking.

Let's build everything from scratch.

New dependency.

This reverts commit c102f7db.

Seems something breaks in Continuous when updating Meson.

It seems to be broken.

Gegl has changed the build system, so we need to check that its down
dependencies are updated.

Move to the Meson build, as the Autotools one will be soon removed.

It was upstreamed a while ago.

Soname bump in libgdata.

Build failure.

The project dropped Autotools.

The hard dependency on librsvg is a bug in the Meson build.

Libwacom started depending on librsvg, which strings along half of the
dependencies on libinput, which depends on libwacom.

We don't build a new systemd because of reasons.

The default for compiler warnings is to enable -Werror, which would be
well and good, except libqmi still uses deprecated API which triggers a
build failure.

That's where they moved.

Pango depends on HB 2.0, now.

This reverts commit 662b02c7.

Mutter has been untagged, so we can untag GNOME Shell as well.

This reverts commit 44334442.

Mutter has been tagged, so we need to tag gnome-shell as well.

This reverts commit 93b96b6b.

Back to tagging Mutter, because the GNU libc in Continuous doesn't have
getrandom() even in linux/random.h. We're going to need a local patch
for the syscall.

This reverts commit 7c12668d.

The dependency on sys/random.h was amended upstream.

This reverts commit 84a25676.
The previous build failure with meson should be fixed:
https://github.com/p11-glue/p11-kit/pull/234