It doesn't build there.

BlastEm doesn't yet support snapshots, DOSBox-SVN needs work, and doesn't
support snapshots either, MAME just doesn't work, Mednafen Saturn requires
firmware, and PrBoom crashes because of missing data.

Also drop BlastEm test.

Currently, we make a new save directory every time we load a state.
Unfortunately, libretro cores don't really have a good way to track
the save dir changes, save from polling it every frame and comparing to
what they have. And, for example, Dolphin doesn't do this.

Instead, create a save directory once per game and never change it, just
replace its contents when loading the state.

Avoid an error if the $XDG_CACHE_HOME/gnome-games dir wasn't present.

uint16.MAX was wrong, we can't pass more than int16.MAX here.

See GNOME/libmanette@0e847702

This broke the fragile pinning script.

They are all in the SDK now.

Welp. I suppoes Citra just doesn't use sram and that's the only reason it
works.

In the new versioning, 40.0 follows 40.rc, but appstream doesn't like that.

To work around it, compress development versions and fold them into stable.
This way we'll just replace 40.rc by 40.0 instead of having both.

Fix a critical.

HdyStatusPage is 1.1.90+.

See https://discourse.gnome.org/t/port-your-module-from-g-memdup-to-g-memdup2-now/5538

Fix a deprecation warning.

See GNOME/vala#1121

Fix compile-time warnings.

They have been upstreamed.

They have all been upstreamed.