scenefx: update to 0.5

[shmishtopher]

Testing the changes

• I tested the changes in this PR: briefly

Local build testing

• I built this PR locally for my native architecture, x86_64-glibc

Note that swayfx is also a reverse dependency of scenefx and the latest upstream release still depends on scenefx-0.4 / wlroots-0.19. We need to wait for upstream swayfx before merging.

[ahesford]

This is missing a revbump for swayfx.

[shmishtopher]

Thanks for the review, @ahesford. The shlibs and mangowc version issues are fixed.

Do we need to revbump swayfx? The most recent swayfx depends on scenefx 0.4, so building against the new scenefx will fail anyway. Should we just wait for upstream swayfx to support 0.5 and do an ordinary version bump?

[ahesford]

You cannot replace the existing scenefx library with a newer version unless all of its dependants can build with it. If swayfx does not work with the new version, the update will have to wait.

[shmishtopher]

Waiting on wlrfx/scenefx#175 for musl portability fixes.

[tomaneo]

Could the tiny musl compile fix be added as a patch for this PR / scenefx package until upstream releases a version with it?