Since output_destroy() calls wl_list_remove() on the output's link,
the manager must still be valid. This is the same bug fixed in bf926e3
but with a different interface.
Since [1], the xdg-output description is mutable. Listen to output
description changes and send the new output description when updated.
[1]: 048102f21a
Some globals are static and it doesn't make sense to destroy them before
the wl_display. For instance, wl_compositor should be created before the
display is started and shouldn't be destroyed.
For these globals, we can simplify the code by removing the destructor
and stop keeping track of wl_resources (these will be destroyed with the
wl_display by libwayland).
This adds support for xdg-output-unstable-v1 version 3, added in [1].
The xdg_output.done event is now deprecated and is replaced with
wl_output.done.
[1]: 962dd53537
Isaac Freund
Simon Ser
Versus Void
Ian Fan
Brian Ashworth